US2933886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbojet engine convertible to ramjet engine
Assignee: Individual
•
Filing: 1953-04-15
•
Granted: 1960-04-26
•
Expires: 1973-04-15
Abstract
No abstract record available.
Inventors
- 👤 Sharma Devendra Nath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:36
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/04; F02C7/047; F02K; F02K7/00; F02K7/10; F02K7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB121367A
Cited
CH195736A
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US2455313A
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US2636665A
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US2630678A
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US2641902A
Cited
US2599470A
Cited
US2643085A
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US2639579A
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US2708340A
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US2801071A
Cited
US2696078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |