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Patent US2712221A successfully refreshed from Google Patents.
US2712221A
Expired / Lapsed
US
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Gas turbine afterburner apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1952-04-22
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Granted: 1955-07-05
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Expires: 1972-04-22
Abstract
No abstract record available.
Inventors
- 👤 Walter D Pouchot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:32
CPC Classifications
F; F23; F23R; F23R3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2385833A
Cited
FR981045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-04 | 1959-01-03 | 1959-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-04 | 1963-01-03 | 1963-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-04 | 1967-01-03 | 1967-07-05 | $7700.00 | Window Closed / Lapsed |