US2771740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Afterburning means for turbo-jet engines
Assignee: Lockheed Martin Corp
•
Filing: 1950-11-16
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Granted: 1956-11-27
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Expires: 1970-11-16
Abstract
No abstract record available.
Inventors
- 👤 Clarence L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:00
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)
US2402363A
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US2565854A
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FR922032A
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US2589548A
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US2520967A
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US2498939A
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US2572723A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |