US2720256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel systems for internal combustion engines and fuel pressurizing pumps therefor
Assignee: Rolls Royce PLC
•
Filing: 1951-05-08
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Granted: 1955-10-11
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Expires: 1971-05-08
Abstract
No abstract record available.
Inventors
- 👤 Pearson Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:21
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/22; F02C7/236; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1345895A
Cited
US2290350A
Cited
US2429374A
Cited
US2599507A
Cited
US2547959A
Cited
US2575923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |