Patent US2912188A successfully refreshed from Google Patents.
US2912188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet propelled aircraft with tiltable combustion chambers
Assignee: Bell Aircraft Corp
•
Filing: 1955-09-15
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Granted: 1959-11-10
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Expires: 1975-09-15
Abstract
No abstract record available.
Inventors
- 👤 Dietrich E Singelmann
- 👤 James R Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:23
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/002; F02K1/004; F02K3/00; F02K3/12; F05; F05D; F05D2220/00; F05D2220/30; F05D2220/32; F05D2220/328
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2518697A
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US2589732A
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US2696079A
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US2759686A
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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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |