US2379536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid actuated control system
Assignee: Dowty Equipment Ltd
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Filing: 1941-06-18
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Granted: 1945-07-03
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Expires: 1961-06-18
Abstract
No abstract record available.
Inventors
- 👤 Mackenzie Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:21
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/02; B64C25/08; B64C25/10; B64C25/18; B64C25/22; Y; Y10; Y10S; Y10S60/00; Y10S60/911; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-07-02 | 1949-01-01 | 1949-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-07-02 | 1953-01-01 | 1953-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-07-02 | 1957-01-01 | 1957-07-03 | $7700.00 | Window Closed / Lapsed |