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Patent US2968922A successfully refreshed from Google Patents.
US2968922A
Expired / Lapsed
US
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Combustion turbine power units
Assignee: Napier Turbochargers Ltd
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Filing: 1958-09-29
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Granted: 1961-01-24
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Expires: 1978-09-29
Abstract
No abstract record available.
Inventors
- 👤 Ronald A Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:26
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/20; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F02C7/36; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2469439A
Cited
US2488783A
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US2695499A
Cited
US2718756A
Cited
US2880571A
Cited
GB787739A
Cited
US2831543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |