Patent US2631427A successfully refreshed from Google Patents.
US2631427A
Expired / Lapsed
US
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Gas turbine unit, particularly for driving road motor vehicles
Assignee: Armstrong Siddeley Motors Ltd
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Filing: 1950-07-24
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Granted: 1953-03-17
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Expires: 1970-07-24
Abstract
No abstract record available.
Inventors
- 👤 Horace S Rainbow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:34
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/04; F02C3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191309454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |