Expired, full termArchiveSolo inventor
Upper part for spindles
US 2,246,475 A · Inventors: WILHELM STAHLECKER
Overview
The published document from the USPTO: abstract, claims, description and drawings. Open it full size
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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 June 17, 1941. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by June 17, 1958.
- We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledDecember 21, 1939
GrantedJune 17, 1941
Term endedJune 17, 1958
Application number—
Classification (CPC)D01H7/16
Length2 pages
Timeline
Timeline From USPTO dates
Sources & verification
Official USPTO records
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Everything on this page comes from the USPTO record linked above.