Patent US3834617A successfully refreshed from Google Patents.
US2857742A
Expired / Lapsed
US
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Temperature control device for an engine
Assignee: MARQUARDT AIRCRAFT Co
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Filing: 1953-04-15
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Granted: 1958-10-28
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Expires: 1973-04-15
Abstract
No abstract record available.
Inventors
- 👤 John A Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/02; F01D17/08; F01D17/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1102345A
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US2441948A
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US2566319A
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US2667743A
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US2457595A
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US2545703A
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US2641105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |