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鲤鱼诀:专利在哪看呀?是有个专门的网站吗? io(Rb\#" (2020-06-14 19:49) 3N 5b3F
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蠊蠊:http://www.innojoy.com/search/index.htmlhttp://www.patviewer.com/ 分享两个 (2020-06-14 20:40) bSgdVP-
鲤鱼诀:专利在哪看呀?是有个专门的网站吗? \\Te\l|L (2020-06-14 19:49) ;.{J>Q/U,
wdyb88:可以参考专利期已过公布的专利 (2017-06-30 21:47) #{5h6IC