Expired, full termArchiveSolo inventor
Burner
US 2,229,068 A · Inventors: MARTIN FRISCH
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 January 21, 1941. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by January 21, 1958.
- We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledApril 17, 1930
GrantedJanuary 21, 1941
Term endedJanuary 21, 1958
Application number—
Classification (CPC)F23D1/00
Length10 pages
Sources & verification
Official USPTO records
Cross-check elsewhere
Everything on this page comes from the USPTO record linked above.