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us patent search

2014年3月27日 - Search for patents. Find existing patents, published patent applications and other published patent documentation. PatFT AppFT · File Online.

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  • Patent Search (Search for Patents) Learn about Patent Classification Filing Online Checkin...
    ... Status & Document Retrieval - United States Patent ...
    http://tsdr.uspto.gov
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    EPO - Searching for patents: patent information ...
    https://www.epo.org
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    FPO IP Research & Communities - Free Patents Online ...
    http://www.freepatentsonline.c
  • Search and read the full text of patents from around the world with Google Patents, and fi...
    Google Patents
    https://patents.google.com
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    Patents - Google
    http://www.google.com
  • 2014年3月27日 - Search for patents. Find existing patents, published patent applications and...
    Patents | USPTO - United States Patent and Trademark Office
    https://www.uspto.gov
  • If you are an academic or a practitioner whose work would benefit from exposure to the com...
    PatentStorm - U.S. Patents Library and Database ...
    http://www.patentstorm.us
  • 2009年7月21日 - How to Conduct a Preliminary U.S. Patent Search: A Step by Step ... a sugges...
    PTRC Basic Resources - United States Patent and Trademark Office
    https://www.uspto.gov
  • Find existing patents, published patent applications and other published patent documentat...
    Search for patents | USPTO - United States Patent and Tradem ...
    https://www.uspto.gov
  • 2009年7月4日 - Inventors are encouraged to search the USPTO's patent database to see if ...
    Search for patents | USPTO - United States Patent and Trademark Office
    https://www.uspto.gov
  • The listings contain contact information for attorneys and agents with licenses to practic...
    United States Patent and Trademark Office
    https://oedci.uspto.gov
  • General information concerning patents Find out if a utility, design, or plant patent is r...
    United States Patent and Trademark Office - Official Site
    http://www.uspto.gov
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    US Patent Full-Text Database Boolean Search - USPTO Patent ...
    http://patft.uspto.gov
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    US Patent Number Search - USPTO Patent Database - United States ...
    http://patft.uspto.gov
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    US PTO Advanced Search Page - USPTO Patent Database - United ...
    http://patft.uspto.gov
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    USPTO – PatFT - United States Patent and Trademark Office
    http://patft.uspto.gov
  • Download and print a PDF copy of any U.S. patent, for free, through the use of a simple we...
    www.pat2pdf.org - A FREE patent search tool
    http://pat2pdf.org