Patent US2499831A successfully refreshed from Google Patents.
US2499831A
Expired / Lapsed
US
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Fan deicing or antiicing means
Assignee: Curtiss Wright Corp
•
Filing: 1943-10-26
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Granted: 1950-03-07
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Expires: 1963-10-26
Abstract
No abstract record available.
Inventors
- 👤 Everett P Palmatier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:11
CPC Classifications
B; B64; B64D; B64D15/00; B64D15/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE539730C
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US1099083A
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US1344661A
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US1850378A
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US1742938A
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US1728204A
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US2173896A
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US2318233A
Cited
US2347153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |