Patent US3384346A successfully refreshed from Google Patents.
US3384346A
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US
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Aerofoil shaped blade for a fluid flow machine such as a gas turbine engine
Assignee: Rolls Royce PLC
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Filing: 1967-01-19
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Granted: 1968-05-21
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Expires: 1987-01-19
Abstract
No abstract record available.
Inventors
- 👤 Halls Gordon Allan
- 👤 Davies Glyn Twiston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:49
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187; F01D5/188; F01D5/189
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2647368A
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US2873944A
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US2879028A
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US3032314A
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US3246469A
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US3299632A
Cited
US3301527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |