Patent US2744992A successfully refreshed from Google Patents.
US2744992A
Expired / Lapsed
US
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Deicing control
Assignee: Motors Liquidation Co
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Filing: 1951-03-30
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Granted: 1956-05-08
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Expires: 1971-03-30
Abstract
No abstract record available.
Inventors
- 👤 Esten W Spears
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:55
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2042700A
Cited
US1971534A
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GB446983A
Cited
US2208689A
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US2229740A
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US2338574A
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US2404275A
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US2541512A
Cited
US2469375A
Cited
US2566813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |