US2852942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyroscopic follow-up system
Assignee: D'ETUDE ET D'EXPLOITATION DU PALIER FLUIDE Ste
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Filing: 1953-10-14
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Granted: 1958-09-23
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Expires: 1973-10-14
Abstract
No abstract record available.
Inventors
- 👤 Gerard Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:58
CPC Classifications
B; B64; B64C; B64C17/00; B64C17/02; B64C17/06; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T74/00; Y10T74/12; Y10T74/1261; Y10T74/1268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2226191A
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US2675652A
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US1992970A
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US2328163A
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US2293293A
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US2216800A
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US2278081A
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US2368628A
Cited
US2660886A
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US2692803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |