US2486990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet propulsion motor
Assignee: Franklin Institute
•
Filing: 1945-01-04
•
Granted: 1949-11-01
•
Expires: 1965-01-04
Abstract
No abstract record available.
Inventors
- 👤 Catherine D Sharpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:46
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US855165A
Cited
FR457182A
Cited
GB227151A
Cited
US2024274A
Cited
US2001529A
Cited
GB439805A
Cited
US2220066A
Cited
US2356746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |