US2872780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse jet engine with acceleration chamber
Assignee: Individual
•
Filing: 1953-04-07
•
Granted: 1959-02-10
•
Expires: 1973-04-07
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:04
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/02; F02K7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US735007A
Cited
FR345486A
Cited
GB176838A
Cited
GB424955A
Cited
US2650472A
Cited
US2500712A
Cited
US2613496A
Cited
US2574460A
Cited
US2543758A
Cited
US2612722A
Cited
US2593523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |