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Does the U.S.Patent & Trademark Office have free searchable online patent databases?

April 26, 2017databases Free Office online patent searchable Trademark

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Does the U.S.Patent & Trademark Office have free searchable online patent databases?

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Yes, the US Patent & Trademark Office site has full-text and image databases of patents issued since 1790 and patent applications. TIFF software is needed to view the patent images but the “How to Access and View Full-Page Images” link on the site tells you how to get the software for free.