US2485502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet propulsion means for helicopters
Assignee: Stewart Warner Corp
•
Filing: 1945-04-12
•
Granted: 1949-10-18
•
Expires: 1965-04-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:16
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/04; B64C27/12; B64C27/16; B64C27/18; F; F02; F02K; F02K7/00; F02K7/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1569607A
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GB227151A
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GB275677A
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US1897092A
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GB366450A
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US1932702A
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US2142601A
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GB523468A
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US2330056A
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FR859640A
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US2397357A
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GB556866A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |