US2496279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible electric heater for deicing airfoils
Assignee: Safeway Products Inc
•
Filing: 1945-02-10
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Granted: 1950-02-07
•
Expires: 1965-02-10
Abstract
No abstract record available.
Inventors
- 👤 Robert S Ely
- 👤 Irving M Ketcham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:01
CPC Classifications
B; B64; B64D; B64D15/00; B64D15/12; H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; H05B2203/00; H05B2203/002; H05B2203/005; H05B2203/011; H05B2203/014; H05B2203/015; H05B2203/017; H05B2203/033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |