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Patent US2937495A successfully refreshed from Google Patents.
US2937495A
Expired / Lapsed
US
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Gas turbine plant
Assignee: Power Jets Research and Development Ltd
•
Filing: 1957-02-25
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Granted: 1960-05-24
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Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 Perry Sydney William Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:10
CPC Classifications
F; F02; F02K; F02K3/00; F02K3/02; F02K3/04; F02K3/062; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2505660A
Cited
US2692724A
Cited
US2430399A
Cited
DE809864C
Cited
US2548975A
Cited
US2461242A
Cited
US2611532A
Cited
US2614385A
Cited
US2711631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |