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日期:2024-05-28
1376, "open letter or document from some authority," shortened form of Anglo-Fr. lettre patent (also in M.L. (litteræ) patentes), lit. "open letter" (1292), from O.Fr. patente (adj.), from L. patentum (nom. patens) "open, lying open," prp. of patere "lie...
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日期:2024-06-02
Most Popular Patent Content Recent documents: US Patents US Applications US Design Patents Miscellaneous: Crazy Patents University Patents Chemical Patents New Computers: Permitting Access Electrical Computers...
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日期:2024-05-27
The official website of the European Patent Office (EPO). Find information on applying and searching for patents, legal issues on patents, patent grants, rules and regulations about ......
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日期:2024-05-31
The US Patent and Trademark Office (
PTO) offers World-Wide Web (Web) ......
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日期:2024-06-01
2013年9月30日 - See this important information about searching for patents: ... How to Conduct a Preliminary U.S. Patent Search: A Step by Step Strategy - Web ......
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日期:2024-05-26
Complete Patent Searching Database and Patent Data Analytics Services....
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日期:2024-05-29
Note that most fields support Phrase (ABST/"cardboard box"), Proximity ......