Expired design patentArchive
Surface effect ship
US D277,657 S · Assignee: Textron Inc. · Inventors: Chaplin; John B.
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 February 19, 1985. A US design patent lasts 14 years from grant (15 if filed from May 13, 2015), so this one ended February 19, 1999.
- A design patent protects only how a product looks. We check US rights only.
FiledDecember 2, 1982
GrantedFebruary 19, 1985
Term endedFebruary 19, 1999
Application number06/446388
Classification (CPC)—
Length3 pages
Timeline
Timeline From USPTO dates
Sources & verification
Official USPTO records
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Everything on this page comes from the USPTO record linked above.