Patent US3393518A successfully refreshed from Google Patents.
US3393518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft power plant
Assignee: Rolls Royce PLC
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Filing: 1967-04-03
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Granted: 1968-07-23
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Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 Bridge Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:42
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/52; F02K1/40; F02K1/44; F02K3/00; F02K3/02; F02K3/04; F02K3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2664700A
Cited
DE916607C
Cited
US3033494A
Cited
US3027710A
Cited
US3174282A
Cited
US3289409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |