Expired design patentArchive
Air heater
US D615,641 S · Assignee: Rinnai Corporation · Inventors: Maegawa; Katsunori et al.
Overview
18 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 May 11, 2010. A US design patent lasts 14 years from grant (15 if filed from May 13, 2015), so this one ended May 11, 2024.
- A design patent protects only how a product looks. We check US rights only.
FiledSeptember 24, 2009
GrantedMay 11, 2010
Term endedMay 11, 2024
Application numberD/344151
Classification (CPC)—
Length19 pages
Sources & verification
Official USPTO records
Cross-check elsewhere
Everything on this page comes from the USPTO record linked above.