Patent US2707372A successfully refreshed from Google Patents.
US2707372A
Expired / Lapsed
US
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Afterburner apparatus for turbo jet engines having movable flame holder means
Assignee: Lockheed Martin Corp
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Filing: 1947-06-11
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Granted: 1955-05-03
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Expires: 1967-06-11
Abstract
No abstract record available.
Inventors
- 👤 Ii Frank A Cleveland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:48
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/16; F23R3/18; F23R3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE298145C
Cited
US424305A
Cited
US2421518A
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US2394384A
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US2409176A
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FR922032A
Cited
US2566373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |