Expired, full termArchiveSolo inventor
Equipment foundation of sectional type
US 2,236,775 A · Inventors: HUNSAKER CLAUDE H et al.
Overview
The published document from the USPTO: abstract, claims, description and drawings. Open it full size
Read 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 April 1, 1941. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by April 1, 1958.
- We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJanuary 11, 1940
GrantedApril 1, 1941
Term endedApril 1, 1958
Application number—
Classification (CPC)H02B1/00
Length7 pages
Sources & verification
Official USPTO records
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Everything on this page comes from the USPTO record linked above.