Expired design patentArchive
Set of keys for a keyboard
US D580,446 S · Assignee: Microsoft Corporation · Inventors: DeMaio; Pasquale et al.
Overview
The published document from the USPTO: abstract, claims, description. Open it full size
Read 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 11, 2008. A US design patent lasts 14 years from grant (15 if filed from May 13, 2015), so this one ended November 11, 2022.
- A design patent protects only how a product looks. We check US rights only.
FiledJune 3, 2008
GrantedNovember 11, 2008
Term endedNovember 11, 2022
Application numberD/319088
Classification (CPC)—
Length7 pages
Timeline
Timeline From USPTO dates
Sources & verification
Official USPTO records
Cross-check elsewhere
Everything on this page comes from the USPTO record linked above.