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patft.uspto.govThe US Patent and Trademark Office (PTO) offers World-Wide Web (Web) access to bibliographic and full-text patent databases.瀏覽：933 -
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www.freepatentsonline.comMost 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瀏覽：726
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日期：2024-07-27
US Plant Patent pp05000 [add leading 0's if needed] US Reissue re34343 US Statutory Invention Reg. h1234 Multiple Requests Separate with a semicolon: 12345; pp6000 Enter Number(s): To link to a patent, please use the ......
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日期：2024-07-29
Complete Patent Searching Database and Patent Data Analytics Services. ... Note that most fields support Phrase (ABST/"cardboard box"), Proximity (ABST/"cardboard box"~5), Wildcard (ABST/card*), and Leading Wildcard ......
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日期：2024-07-30
Download and print a PDF copy of any U.S. patent, for free, through the use of a simple web form. Multiple patents can be obtained by separating requests with a semicolon. Design ......
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日期：2024-08-01
Complete Patent Searching Database and Patent Data Analytics Services....
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日期：2024-07-29
Note that most fields support Phrase (ABST/"cardboard box"), Proximity ......
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日期：2024-07-29
www.pat2pdf.org - A FREE patent search tool. Download U.S. patents (in PDF)
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日期：2024-08-02
A list of online databases for a free patent search covering Canada - United
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