Expired, full termArchiveSolo inventor
Furfural extraction process
US 2,654,792 A · Inventors: GILMORE FORREST E
Overview
1 drawing sheet
Every sheet is in the USPTO PDF.
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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 October 6, 1953. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by October 6, 1970.
- We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledDecember 19, 1949
GrantedOctober 6, 1953
Term endedOctober 6, 1970
Application number—
Classification (CPC)C10G21/16
Length7 pages
Sources & verification
Official USPTO records
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Everything on this page comes from the USPTO record linked above.