US2293050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed change mechanism
Assignee: Fairchild Engine and Airplane Corp
•
Filing: 1940-05-27
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Granted: 1942-08-18
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Expires: 1960-05-27
Abstract
No abstract record available.
Inventors
- 👤 Pew Chester C De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:32
CPC Classifications
F; F02; F02B; F02B33/00; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F02M; F02M2700/00; F02M2700/33; F02M2700/331; F02M2700/333; F16H2716/00; F16H2716/04
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) | 1945-08-17 | 1946-02-16 | 1946-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-08-17 | 1950-02-16 | 1950-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-08-17 | 1954-02-16 | 1954-08-18 | $7700.00 | Window Closed / Lapsed |