US2952973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbofan-ramjet engine
Assignee: Motors Liquidation Co
•
Filing: 1958-06-02
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Granted: 1960-09-20
•
Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Russell S Hall
- 👤 Johnson Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:41
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/32; F02C7/26; F02C7/268; F02C7/275; F02C7/277; F02K; F02K7/00; F02K7/10; F02K7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH263472A
Cited
US2803943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |