US3531935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine
Assignee: Rolls Royce PLC
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Filing: 1968-06-17
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Granted: 1970-10-06
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Expires: 1988-06-17
Abstract
No abstract record available.
Inventors
- 👤 Michael Poucher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:35
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/02; F01D11/04; F01D25/00; F01D25/18; F16; F16C; F16C33/00; F16C33/30; F16C33/66; F16C33/6637; F16C33/6659; F16C33/6677; F16N; F16N7/00; F16N7/36; F16C19/00; F16C19/22; F16C19/24; F16C19/26; F16C2360/00; F16C2360/23; F16N2210/00; F16N2210/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB179525A
Cited
US1732761A
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US2411124A
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FR1122005A
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US2966296A
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US2935363A
Cited
US3135562A
Cited
US3264043A
Cited
US3285566A
Cited
US3393024A
Cited
US3285004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |