Expired, full termArchiveSolo inventor
Manufacture of blocks
US 1,661,007 A · Inventors: CALEB PAYNE
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 February 28, 1928. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by February 28, 1945.
- We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledAugust 14, 1922
GrantedFebruary 28, 1928
Term endedFebruary 28, 1945
Application number—
Classification (CPC)B28B5/08 +1 more
Length10 pages
Sources & verification
Official USPTO records
Cross-check elsewhere
Everything on this page comes from the USPTO record linked above.