US2959918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engines
Assignee: Rolls Royce PLC
•
Filing: 1955-04-21
•
Granted: 1960-11-15
•
Expires: 1975-04-21
Abstract
No abstract record available.
Inventors
- 👤 West Harold Edward William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:17
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/32; F02C7/26; F02C7/268; F02C7/275; F02C7/277
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2127738A
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US2608054A
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US2372453A
Cited
US2585029A
Cited
USRE23444E
Cited
US2633830A
Cited
US2659194A
Cited
US2739442A
Cited
US2692476A
Cited
US2806351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |