Patent US2446328A successfully refreshed from Google Patents.
US2446328A
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Protective apparatus for preventing the accumulation of ice on airfoils
Assignee: Goodrich Corp
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Filing: 1945-05-01
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Granted: 1948-08-03
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Expires: 1965-05-01
Abstract
No abstract record available.
Inventors
- 👤 Eugene E Heston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:19
CPC Classifications
B; B64; B64D; B64D15/00; B64D15/16; B64D15/166
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB143644A
Cited
US1585339A
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US1709797A
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US1740445A
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US2025919A
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US2169041A
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US2168008A
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US2204122A
Cited
US2173262A
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US2253746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-03 | 1952-02-02 | 1952-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-03 | 1956-02-02 | 1956-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-03 | 1960-02-02 | 1960-08-03 | $7700.00 | Window Closed / Lapsed |