US2593536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel metering and airscrew pitch control mechanism
Assignee: Napier Turbochargers Ltd
•
Filing: 1947-08-05
•
Granted: 1952-04-22
•
Expires: 1967-08-05
Abstract
No abstract record available.
Inventors
- 👤 Chamberlin Reginald He Douglas
- 👤 Wynne Charles Horace Lionel
- 👤 Skellern John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:19
CPC Classifications
G; G01; G01F; G01F9/00; G01F9/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE525878C
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US2089873A
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US2419171A
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US2422808A
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US2398586A
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US2457595A
Cited
US2474033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |