Patent US2454893A successfully refreshed from Google Patents.
US2454893A
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US
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Fluid-operated motor
Assignee: French Oil Mill Machinery Co
•
Filing: 1941-07-01
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Granted: 1948-11-30
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Expires: 1961-07-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Stacy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:42
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/16; B30B15/18; B30B15/186
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-30 | 1952-05-31 | 1952-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-30 | 1956-05-31 | 1956-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-30 | 1960-05-31 | 1960-11-30 | $7700.00 | Window Closed / Lapsed |