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Expired design patentArchive

Utility knife

US D511,447 S · Assignee: Irwin Industrial Tool Company · Inventors: Brown; Donald A. et al.

USPTO PDF

Overview

10 drawing sheets

Every sheet is in the USPTO PDF.

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted November 15, 2005. A US design patent lasts 14 years from grant (15 if filed from May 13, 2015), so this one ended November 15, 2019.
  • A design patent protects only how a product looks. We check US rights only.
FiledNovember 10, 2003
GrantedNovember 15, 2005
Term endedNovember 15, 2019
Application numberD/193538
Classification (CPC)—
Length12 pages

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