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在我国，不同类型的发明创造保护期限有所不同。发明专利的期限为20年；实用新型专利和外观设计专利的期限为10年，均自申请之日起计算。虽然专利法规定的专利权期限是从申请日起计算，但这只是专利权期限的计算起点，并不代表专利权从申请日就开始有效了，而是自授权公告之日起生效。由于专利申请必须经过专利局的审查才有可能获得专利权，因此，从申请日到专利局对专利申请作出授权公告需要一定时间，这样，发明专利的专利权人所实际能得到的法律保护的有效期限一定少于20年，实用新型和外观设计专利的专利权人所实际能够得到法律保护的有效期限一定少于10年。《中华人民共和国专利法》第四十二条发明专利权的期限为二十年，实用新型专利权的期限为十年，外观设计专利权的期限为十五年，均自申请日起计算。自发明专利申请日起满四年，且自实质审查请求之日起满三年后授予发明专利权的，国务院专利行政部门应专利权人的请求，就发明专利在授权过程中的不合理延迟给予专利权期限补偿，但由申请人引起的不合理延迟除外。为补偿新药上市审评审批占用的时间，对在中国获得上市许可的新药相关发明专利，国务院专利行政部门应专利权人的请求给予专利权期限补偿。补偿期限不超过五年，新药批准上市后总有效专利权期限不超过十四年。
外观专利的保护期限是十年，从申请日开始保护。
我国的《专利法》中第四十二条规定：发明专利权的期限为二十年，实用新型专利权和外观设计专利权的期限为十年，均自申请日起计算。
The Shenzhen strength reached the power equipment limited company to be established in 1994, was is engaged in the correspondence power source protection, the control device and road product research, the development, the production, the sales and so on road traffic safe symbol, facility Chinese-foreign joint venture high technology and new technology enterprise The Shenzhen strength reaches the power equipment limited company headquarters to be located in Shenzhen cities and areas king commercial building 16 buildings 8, has the advanced research and development center and the means of production, passes through many years endeavor, has formed the telecommunication profession correspondence power source and the transportation path safety equipment two big series The company regards the product quality for enterprise's life, provides the quality product and the good post-sale service unceasingly for the user communities, enjoys the high reputation in the The number year, the company produces the product once successively obtained the national electron electric power quality surveillance center examination certificate of quality, the Chinese Ministry of Communications traffic engineering overseeing examination center examination certificate of quality, the information industries department anti-radar examination center examination certificate of quality, Shenzhen science and technology bureau issues "the technical achievement" the certificate, had the honor to receive China to protect the consumer foundation to evaluate "the consumer trustworthy product" the great honor, is written down by the country engineering supervision bureau China standard information center the Chinese and foreign famous brand goods distinction The company is also evaluated by the China engineering supervision information association "national user product quality satisfaction, the post-sale service satisfaction top-notch enterprise" Recently several years, our company produced the product performance better and better, the quality hastened finely, is widely applied in each place all the various trades and occupations, in the correspondence domain, our company product held the very big market share In in the national highway traffic industry, our company's manostat, the tunnel lightning protection system, the tunnel induction system, the tunnel air blower wrong protector, the solar energy symbolized the sign, breaks out product and so on guidepost system obtained the widespread In Zhejiang, Xinjiang and so on many provinces and cities highway domain already became had the certain well-knownness the The company existing staff more than 100 people, above technical college the school record accounts for about 75% The company regards the talented person for the first essential factor, develops the human resources unceasingly, the preferential absorption development, the professional high quality talented person, advocated the unity cooperation the team spirit, has formed the benign competition talented person In the scientific research domain, the company take enhances the product 先进性, the rationality and the serviceability as a goal, in the new product research and development, the improvement product performance, aspect and so on promotion production technological level invests the massive manpower, the physical resource, and yields the remarkable The company pays great attention to the establishment effective quality control system, and passed the international ISO9001-2000 quality control system authentication, also is elected by the China information industries department for corresponds the power source to enter the net fixed point product production At the same time the company is equipped with many subsidiary companies and the office in the nation, in Guangzhou, the seaport, Jinan, Chengdu, Nanjing, Xi'an, Wenzhou, Shenyang, forms several big marketing pieces area separately, the network radiates the In the near future also will have in Central China, northwest and so on the local establishment subsidiary At the same time each area all is equipped with the special post-sale service station, provides rapidly, the thorough post-sale service as necessary for In addition, the company took many worlds name brands accumulator cell, anti-radar product and so on, battery measuring instrument, UPS national general agent, is willing safely to provide, is reliable, the intellectualization, the omni-directional service for The company in line with the sincere service, the communal development objective and each place user establishment is good but the stable cooperation relations, our sincerely anticipation and the new-old friends share the successful
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学校一般都说不准用大功率电器，实际上西政很开明，我们大学时候电器、洗衣机等都在用，平时也没人管，等到学校要检查的时候宿管都会提前通知我们，所以不要担心。另外电扇就不需要了，宿舍里面有空调，呵呵！
这篇文章虽然长了点,但很详细,尤其是有关内部构造和功能方面:-)HowHairDryersWorkbyAnnMeeker-O'ConnellManypeoplearefamiliarwiththedailyroutineofwashing,drying,Althoughhairwilleventuallydryonitsownifgivenenoughtime,Whilesciencemayhavedisproventhelinkbetweenwetheadsandcatchingcolds,it'sstillnofuntositaroundwithaheadfullofwethair,especiallyinthewinter!Haveyoueverwonderedwhat'sinsideahairdryerthatletsyoublowhotairthroughyourhairwithoutburningyourscalp?Inthisarticle,we'TheBasicsYThismodelhastwoswitches,SAbasichairdryerThehairdryerdriesyourhairbyspeedinguptheevaporationofwaterfromthehair'TSincewarmaircancontainmoremoisturethanairatroomtemperature,THSincethen,thousandsofpatentshavebeenissuedfordifferenthairdryerdesigns,Asidefromtheadditionofsomesafety查看原帖>>
2020年10月17日，全国人大常委会表决通过了关于修改专利法的决定。修改后的专利法将于2021年6月1日起实行，这是中国现行专利法的第四次修改，修改后的外观设计专利的保护期由10年延长至15年。
外观专利有效期为10年。法律依据：《中华人民共和国专利法》第四十二条发明专利权的期限为二十年，实用新型专利权和外观设计专利权的期限为十年，均自申请日起计算。
法律分析：根据我国相关法律规定，对于外观专利有效期限为十年。法律依据：《中华人民共和国专利法》第四十二条 发明专利权的期限为二十年，实用新型专利权和外观设计专利权的期限为十年，均自申请日起计算。
二十年 外观设计专利权的期限为二十年，实用新型专利权和外观设计专利权期限为十年，均自申请日起计算。外观专利的有效期限是20年，在这20年之内必须每年缴纳一定的年费才会维持专利权的有效。专利权期限是指专利权的法定期满终止时间。从专利权授权公告之日起，如无因其它事由造成专利权终止的，则该专利权到专利权期限届满之日终止。著作权法 第二十一条 公民的作品，其发表权、本法第十条第一款第(五)项至第(十七)项规定的权利的保护期为作者终生及其死亡后五十年，截止于作者死亡后第五十年的12月31日;如果是合作作品，截止于最后死亡的作者死亡后第五十年的12月31日。 法人或者其他组织的作品、著作权(署名权除外)由法人或者其他组织享有的职务作品，其发表权、本法第十条第一款第(五)项至第(十七)项规定的权利的保护期为五十年，截止于作品首次发表后第五十年的12月31日，但作品自创作完成后五十年内未发表的，本法不再保护。法律依据：《中华人民共和国专利法》第四十二条发明专利权的期限为二十年，实用新型专利权和外观设计专利权的期限为十年，均自申请日起计算。第四十三条专利权人应当自被授予专利权的当年开始缴纳年费。第四十四条有下列情形之一的，专利权在期限届满前终止：（一）没有按照规定缴纳年费的；（二）专利权人以书面声明放弃其专利权的。专利权在期限届满前终止的，由国务院专利行政部门登记和公告。
外观设计专利保护期限是十五年。根据相关法律规定，依法被授予专利权的发明创造中，外观设计专利权的期限为十五年，实用新型专利权的期限为十年，发明专利权的期限为二十年。【法律依据】《中华人民共和国专利法》第四十二条发明专利权的期限为二十年，实用新型专利权的期限为十年，外观设计专利权的期限为十五年，均自申请日起计算。第四十三条专利权人应当自被授予专利权的当年开始缴纳年费。第四十四条有下列情形之一的，专利权在期限届满前终止：（一）没有按照规定缴纳年费的；（二）专利权人以书面声明放弃其专利权的。专利权在期限届满前终止的，由国务院专利行政部门登记和公告。
截止目前，外观设计专利期限最长15年。2022年3月30日，国家发改委、财政部发布《关于外观设计专利年费、单独指定费标准有关问题的通知》，通知指出：将外观设计专利权期限由10年延长为15年；指定进入我国的外观设计国际申请及国际注册续展，相关申请人应缴纳单独指定费。规定自2022年5月5日起执行。同时按照上述通知要求，外观设计专利第11-15年年费标准为每年3000元。单独指定费标准为：第一期(1-5年)4100元，第二期(6-10年)7600元，第三期(11-15年)15000元。收费单位应严格执行上述规定，不得擅自增加收费项目、扩大收费范围和改变收费标准。价格、财政、市场监管部门要加强对本通知落实情况的监督检查，对不按规定执行收费标准的，依法给予处罚。关注我，多学法律，遇事不慌。