US2945574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic hydraulic control for clutch
Assignee: Boeing Co
•
Filing: 1954-07-09
•
Granted: 1960-07-19
•
Expires: 1974-07-09
Abstract
No abstract record available.
Inventors
- 👤 William F Plume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:13
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/28; F16D43/286; F16D25/00; F16D25/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US794899A
Cited
US1579540A
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US1661613A
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US2092104A
Cited
US2313187A
Cited
US2328092A
Cited
US2381786A
Cited
US2413081A
Cited
US2756851A
Cited
US2893525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |