Patent US2942223A successfully refreshed from Google Patents.
US2942223A
Expired / Lapsed
US
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Electrical resistance heater
Assignee: General Electric Co
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Filing: 1957-08-09
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Granted: 1960-06-21
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Expires: 1977-08-09
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Lennox
- 👤 Anthony J Aloi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:54
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2680771A
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US703970A
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US1196254A
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US2261350A
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US2354809A
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US2472930A
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US2459086A
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US2508512A
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US2568600A
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US2790053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |