Patent US4251031A successfully refreshed from Google Patents.
US1926318A
Expired / Lapsed
US
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Stack dump
Assignee: FMC Corp
•
Filing: 1931-09-15
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Granted: 1933-09-12
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Expires: 1951-09-15
Abstract
No abstract record available.
Inventors
- 👤 Albert R Thompson
- 👤 Clinton C Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:36
CPC Classifications
B; B65; B65G; B65G65/00; B65G2814/00; B65G2814/03; B65G2814/0301; B65G2814/0314; B65G2814/0316; B65G2814/0317
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-09-11 | 1937-03-13 | 1937-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-09-11 | 1941-03-13 | 1941-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-09-11 | 1945-03-13 | 1945-09-12 | $7700.00 | Window Closed / Lapsed |