国产精品日日摸夜夜添夜夜添无码_亚洲国产成人精品无码区99_蜜桃秘做爰免费网站_国产一区二区不卡视频_精品人人槡人妻人人玩_色777狠狠狠综合伊人_日日夜夜嫩草_国产精品无码久久久_国产精品无码久久久久av_五月天堂婷婷爱_久草资免费资源_羞羞答答综合网_又湿又紧又爽视频免费软件_每日更新日韩精品_欧美精品18videosex性欧_橙人精品在线观看

搜索:  
分類

專利知識

瀏覽美國專利全文圖像文件的插件/控件的下載方法 (2002-03-07)
The Patent Full-Text Database contains hyperlinks from the [Images] button at the top of each full-text document display to the full-page images of each page of each patent in the database. New full-page images are normally available each issue day (Tuesday of each week).

美國專利分類法 (USPC)
【簡介】
可在線瀏覽和檢索的美國專利分類法。

國際專利分類 (IPC, International Patent Classification)

The International Patent Classification (IPC), established by the Strasbourg Agreement 1971, provides for a hierarchical system of language independent symbols for the classification of patents and utility models according to the different areas of technology to which they pertain.

What Every Chemist Should Know about Patents (化學(xué)家應(yīng)該了解的專利知識)

This is the 3rd edition of the American Chemical Society Committee on Patents and Related Matters patent primer, "What Every Chemist Should Know about Patents".

Research Disclosure (研究披露)
Our defensive publication service establishes inventions as prior art, preventing others from patenting the same concept.