Expired design patentArchive
Utility knife
US D511,447 S · Assignee: Irwin Industrial Tool Company · Inventors: Brown; Donald A. et al.
Overview
10 drawing sheets
Every sheet is in the USPTO PDF.
Open the USPTO PDFRead the whole patent
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
Sources & verification
Official USPTO records
Cross-check elsewhere
Everything on this page comes from the USPTO record linked above.