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Patent US2608818A successfully refreshed from Google Patents.
US2608818A
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Internal-combustion engine with supercharger driven by an exhaust turbine
Assignee: Rolls Royce PLC
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Filing: 1949-03-08
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Granted: 1952-09-02
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Expires: 1969-03-08
Abstract
No abstract record available.
Inventors
- 👤 Shelley Thomas
- 👤 Kent Nelson Hector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:09
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/005; F02B37/04; F02B37/10; F02B37/105; F02B37/12; F02B37/18; F02B39/00; F02B39/02; F02B39/04; F02C; F02C6/00; F02C6/04; F02C6/10; F02C6/12; F02C7/00; F02C7/36; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB206845A
Cited
GB369033A
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GB421110A
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US2277839A
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US2385366A
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GB507974A
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US2197179A
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US2278181A
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US2400068A
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US2421518A
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US2386096A
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US2402725A
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US2444456A
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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) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |