Patent US2741692A successfully refreshed from Google Patents.
US2741692A
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US
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Electrically heated protective covering for an airfoil and method of making the covering
Assignee: Goodrich Corp
•
Filing: 1952-11-26
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Granted: 1956-04-10
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Expires: 1972-11-26
Abstract
No abstract record available.
Inventors
- 👤 Marvin B Luke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:44
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/36; B; B64; B64D; B64D15/00; B64D15/12; H05B2203/00; H05B2203/002; H05B2203/005; H05B2203/014; H05B2203/017; H05B2203/033; H05B2203/037; H05B2214/00; H05B2214/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2423196A
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US2599059A
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US2564325A
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US2503457A
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US2575987A
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US2643320A
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US2619580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |