Expired design patentArchiveSolo inventor
Stand mountable on ladder
US D522,666 S · Inventors: Clayton, Jr.; Charles R.
Overview
4 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 June 6, 2006. A US design patent lasts 14 years from grant (15 if filed from May 13, 2015), so this one ended June 6, 2020.
- A design patent protects only how a product looks. We check US rights only.
FiledOctober 27, 2004
GrantedJune 6, 2006
Term endedJune 6, 2020
Application numberD/215947
Classification (CPC)—
Length5 pages
Sources & verification
Official USPTO records
Cross-check elsewhere
Everything on this page comes from the USPTO record linked above.