US3545209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine by-pass engine
Assignee: Rolls Royce PLC
•
Filing: 1968-06-07
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Granted: 1970-12-08
•
Expires: 1988-06-07
Abstract
No abstract record available.
Inventors
- 👤 James Millward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:31
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/0058; B64C29/0066; F; F02; F02K; F02K1/00; F02K1/002; F02K1/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2526409A
Cited
US3060680A
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US3041830A
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US3040524A
Cited
FR1340795A
Cited
US3385065A
Cited
US3267667A
Cited
US3279182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |