Expired, full termArchiveSolo inventor
Two-cycle internal combustion engine
US 1,919,829 A · Inventors: CURTIS CHARLES G et al.
Overview
2 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 July 25, 1933. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by July 25, 1950.
- We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledOctober 1, 1931
GrantedJuly 25, 1933
Term endedJuly 25, 1950
Application number—
Classification (CPC)F02F1/22 +1 more
Length4 pages
Sources & verification
Official USPTO records
Cross-check elsewhere
Everything on this page comes from the USPTO record linked above.