Patent US3311842A successfully refreshed from Google Patents.
US2988153A
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US
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Propeller-driving power plant including torque-responsive means
Assignee: Rolls Royce PLC
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Filing: 1958-08-08
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Granted: 1961-06-13
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Expires: 1978-08-08
Abstract
No abstract record available.
Inventors
- 👤 Haworth Lionel
- 👤 Mclean Donald
- 👤 Smith Philip Burrows
- 👤 Heathcote Roy Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:26
CPC Classifications
B; B64; B64D; B64D35/00; B64C; B64C11/00; B64C11/30; B64C11/38; B64C11/40; F; F16; F16H; F16H1/00; F16H1/28; F16H59/00; F16H59/14; F16H59/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2645293A
Cited
US2518708A
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US2562710A
Cited
GB723688A
Cited
GB715133A
Cited
US2926732A
Cited
US2801701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |