Patent US1954678A successfully refreshed from Google Patents.
US1954678A
Expired / Lapsed
US
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Electric heating apparatus
Assignee: General Electric Co
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Filing: 1932-11-29
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Granted: 1934-04-10
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Expires: 1952-11-29
Abstract
No abstract record available.
Inventors
- 👤 Meissner Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:26
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/101; H05B6/103; H05B6/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-04-09 | 1937-10-09 | 1938-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-04-09 | 1941-10-09 | 1942-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-04-09 | 1945-10-09 | 1946-04-10 | $7700.00 | Window Closed / Lapsed |