US2764868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo control of internal combustion prime movers by blower pressure
Assignee: ZF International UK Ltd
•
Filing: 1952-03-24
•
Granted: 1956-10-02
•
Expires: 1972-03-24
Abstract
No abstract record available.
Inventors
- 👤 Watson Ernest Ansley
- 👤 Bottoms Charles Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:32
CPC Classifications
F; F02; F02D; F02D3/00; F02D3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2350781A
Cited
GB560196A
Cited
US2450535A
Cited
GB580149A
Cited
US2503048A
Cited
US2657530A
Cited
US2657529A
Cited
US2686414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |