US2583651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane power plant with direct cooling of exhaust valves
Assignee: Individual
•
Filing: 1945-08-14
•
Granted: 1952-01-29
•
Expires: 1965-08-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur Fredrick Horning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:44
CPC Classifications
F; F02; F02B; F02B71/00; F02B71/04; F02B71/06; F02C; F02C6/00; F02C6/04; F02C6/10; F02C6/12; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB191200118A
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GB191314483A
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US1410726A
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US1635938A
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GB321933A
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US1961905A
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GB360382A
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US2065106A
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FR848225A
Cited
US2188444A
Cited
GB507974A
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US2409176A
Cited
US2443717A
Cited
US2384381A
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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) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |