US2640314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk valve pulse jet engine
Assignee: Individual
•
Filing: 1949-12-16
•
Granted: 1953-06-02
•
Expires: 1969-12-16
Abstract
No abstract record available.
Inventors
- 👤 William E Abel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:36
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/02; F02K7/06; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE640228C
Cited
US2485813A
Cited
US2602289A
Cited
US2474359A
Cited
US2595505A
Cited
FR935322A
Cited
US2515644A
Cited
US2480626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |