US2931442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel supply systems for propeller turbine engines
Assignee: Dowty Fuel Systems Ltd
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Filing: 1956-06-28
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Granted: 1960-04-05
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Expires: 1976-06-28
Abstract
No abstract record available.
Inventors
- 👤 Stanton Francis Patrick
- 👤 Tyler Stanley Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:00
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/28; F02C9/48; F02C9/56; F02C9/58; F05; F05B; F05B2260/00; F05B2260/70; F05B2260/74; F05D; F05D2270/00; F05D2270/30; F05D2270/301
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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |