Patent US2518277A successfully refreshed from Google Patents.
US2518277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overheat protector for heated windshields
Assignee: Lockheed Martin Corp
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Filing: 1947-08-06
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Granted: 1950-08-08
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Expires: 1967-08-06
Abstract
No abstract record available.
Inventors
- 👤 Ward B Brewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:27
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/84; H05B1/00; H05B1/02; H05B1/0227; H05B1/023; H05B1/0236; H05B2203/00; H05B2203/035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB221480A
Cited
US1781244A
Cited
US1900831A
Cited
US2146604A
Cited
US2065844A
Cited
US2006006A
Cited
US2195958A
Cited
US2429420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |