US2465856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet propeller engine
Assignee: Individual
•
Filing: 1946-11-12
•
Granted: 1949-03-29
•
Expires: 1966-11-12
Abstract
No abstract record available.
Inventors
- 👤 Harold E Emigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/005; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371678A
Cited
FR423590A
Cited
US1569607A
Cited
GB227151A
Cited
FR648107A
Cited
GB366450A
Cited
US1923054A
Cited
US2142601A
Cited
US2330056A
Cited
US2397357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |