US2590009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of propelling heavier-thanair devices powered by fuel-burning prime movers
Assignee: Borg Warner Corp
•
Filing: 1947-03-07
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Granted: 1952-03-18
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Expires: 1967-03-07
Abstract
No abstract record available.
Inventors
- 👤 John A Hannum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:04
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1676828A
Cited
US914624A
Cited
GB154254A
Cited
GB429682A
Cited
FR863928A
Cited
US2311827A
Cited
US2433943A
Cited
US2431590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |