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US2969773A
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Hydraulic valve-controlled servo device
Assignee: ZF Active Safety US Inc
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Filing: 1956-05-03
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Granted: 1961-01-31
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Expires: 1976-05-03
Abstract
No abstract record available.
Inventors
- 👤 Augustus P Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:49
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/16; F15B9/17; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/8659; Y10T137/86598
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US752491A
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US2020847A
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US2188834A
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US2236467A
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US2616397A
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US2503447A
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US2649841A
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US2738772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |