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2011年3月24日 - Espacenet - patent search. ... GPI - advanced search. Espacenet. Patent search. Espacenet offers free access to more than 80 million patent ...瀏覽：1471 -
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www.pat2pdf.org - A FREE patent search tool. Download U.S. patents (in PDF) and more! To download a copy of a ...瀏覽：444
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日期：2024-07-15
Free, worldwide patent search. Search over 60 different national offices and
patent search sites at once....
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日期：2024-07-17
A list of online databases for a free patent search covering Canada - United
States - Europe - WIPO and the EPO free ......
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日期：2024-07-14
Germany [DE] Free DPMA Expert Search [since 01/2002, issue weekly] DEPATISnet Expert search [The DEPATISnet online service of the German Patent and Trade Mark Office is constantly being updated] DEPATISnet Patent family search [The DEPATISnet ......
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日期：2024-07-17
2009年7月4日 - Find existing patents, published patent applications and other published patent documentation....
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日期：2024-07-16
Free Patents Online - Looking for a fast, free, search engine with fairly advanced capabilities? ... Fre ......
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日期：2024-07-19
Helpful tips on conducting an online free patent search ... Online Free Patent Search An online free pate ......
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日期：2024-07-15
Free Intellectual Property info and advice on: patents (inventions), trademarks, design and copyright. R ......
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日期：2024-07-18
How to conduct a patent search - use classifications - free patent databases IBM US European and Canadian ......
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