US2657536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for compensating for liquid volume variations in hydraulic remote control systems
Assignee: Societe dInventions Aeronautiques et Mechaniques SIAM SA
•
Filing: 1947-05-05
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Granted: 1953-11-03
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Expires: 1967-05-05
Abstract
No abstract record available.
Inventors
- 👤 Levy Rene Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:21
CPC Classifications
F; F15; F15B; F15B7/00; F15B7/06; F15B7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB517074A
Cited
US2190257A
Cited
GB517314A
Cited
GB443871A
Cited
US2286661A
Cited
GB542871A
Cited
US2334383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |