US2559938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed governor mechanism for aircraft internal-combustion turbine engines
Assignee: Dowty Equipment Ltd
•
Filing: 1948-11-30
•
Granted: 1951-07-10
•
Expires: 1968-11-30
Abstract
No abstract record available.
Inventors
- 👤 Carey Frederick Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:07
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2442149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |