US2674091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse jet engine
Assignee: Phillips Petroleum Co
•
Filing: 1948-08-05
•
Granted: 1954-04-06
•
Expires: 1968-08-05
Abstract
No abstract record available.
Inventors
- 👤 Emil A Malick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:28
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/02; F02K7/06; F16; F16K; F16K15/00; F16K15/14; F16K15/1401; F16K15/1402; F16K2200/00; F16K2200/20; F16K2200/203; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2572; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86413
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1632198A
Cited
US1625787A
Cited
US1959068A
Cited
US2142601A
Cited
US2432213A
Cited
US2505757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |