Patent US2658700A successfully refreshed from Google Patents.
US2658700A
Expired / Lapsed
US
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Turbocompressor power plant for aircraft
Assignee: Power Jets Research and Development Ltd
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Filing: 1945-08-02
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Granted: 1953-11-10
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Expires: 1965-08-02
Abstract
No abstract record available.
Inventors
- 👤 Howell Alun Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:14
CPC Classifications
F; F04; F04D; F04D17/00; F04D17/02; F04D17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US801585A
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US823526A
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US877502A
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US1186950A
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US1868143A
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US1741578A
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US1823579A
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US1945289A
Cited
US2396911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |