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A patent is a set of exclusive rights granted by a sovereign state to an inventor or their assignee for a limited period of time, in exchange for the public disclosure of the invention. An invention is a solution to a ......
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Site search Search current area only Advanced search Patent search Advanced patent search Deutsch English Français Contact About us European Patent Organisation The Office Boards of appeal Jobs Tenders Annual ......
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Home page of the United States Patent and Trademark Office's main web site....
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Complete Patent Searching Database and Patent Data Analytics Services....
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Note that most fields support Phrase (ABST/"cardboard box"), Proximity ......
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Espacenet. Logo European Patent Office. Espacenet. Patent search. Deutsch ·
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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 ......



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