US2658482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for controlling a liquid-operated servo mechanism
Assignee: ZF International UK Ltd
•
Filing: 1951-04-23
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Granted: 1953-11-10
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Expires: 1971-04-23
Abstract
No abstract record available.
Inventors
- 👤 Harris Thomas Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:11
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/06; Y; Y10; Y10T; Y10T137/00; Y10T137/0971
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1624093A
Cited
US1506862A
Cited
DE390550C
Cited
DE500864C
Cited
FR689814A
Cited
US2124418A
Cited
US2333044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |