US3050996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed responsive devices
Assignee: Bristol Siddeley Engines Ltd
•
Filing: 1955-06-13
•
Granted: 1962-08-28
•
Expires: 1975-06-13
Abstract
No abstract record available.
Inventors
- 👤 Henderson Frank Dryburgh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:46
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; G01P5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US297878A
Cited
DE745838C
Cited
US2645240A
Cited
US2662402A
Cited
GB700441A
Cited
US2767725A
Cited
US2767579A
Cited
US2749749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |