US2727975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heating apparatus
Assignee: General Electric Co
•
Filing: 1953-12-14
•
Granted: 1955-12-20
•
Expires: 1973-12-14
Abstract
No abstract record available.
Inventors
- 👤 Robert J Molyneaux
- 👤 Kenneth H Walkoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:56
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0227; H05B1/0252; H05B1/0258; H05B1/0261; H05B1/0266; H05B2213/00; H05B2213/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2093745A
Cited
US2218502A
Cited
US2189462A
Cited
US2215404A
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US2632086A
Cited
US2616020A
Cited
US2686250A
Cited
US2713130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |