US3475913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow reversers
Assignee: Rolls Royce PLC
•
Filing: 1967-06-28
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Granted: 1969-11-04
•
Expires: 1987-06-28
Abstract
No abstract record available.
Inventors
- 👤 James Oswald Mortlock
- 👤 William Herbert London
- 👤 William Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:40
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/54; F02K1/64; F02K1/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2798362A
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US2945346A
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US2980388A
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US3036431A
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US3172256A
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US3112616A
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US3279182A
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US3280561A
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US3333793A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |