US2925867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control systems for aircraft engines
Assignee: Napier Turbochargers Ltd
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Filing: 1957-11-12
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Granted: 1960-02-23
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Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Mckeggie William Arthur
- 👤 Dorey Geoffrey Peter
- 👤 Godden Thomas Edward
- 👤 Morris Edward Hollingworth
- 👤 Cotton Raymond Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:23
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/04; B64C27/12; B64C27/16; B64C27/18; B64C11/00; B64C11/16; B64C11/20; B64C11/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |