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Patent US2444318A successfully refreshed from Google Patents.
US2444318A
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US
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Jet propulsion system for aircraft
Assignee: Individual
•
Filing: 1944-04-24
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Granted: 1948-06-29
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Expires: 1964-04-24
Abstract
No abstract record available.
Inventors
- 👤 Douglas K Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:24
CPC Classifications
B; B60; B60V; B60V1/00; F; F02; F02K; F02K7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1307135A
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US1389797A
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US1375601A
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US1605484A
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US1871055A
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GB449148A
Cited
US2072029A
Cited
FR818703A
Cited
US2348106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |