US2686250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heating apparatus
Assignee: General Electric Co
•
Filing: 1951-11-02
•
Granted: 1954-08-10
•
Expires: 1971-11-02
Abstract
No abstract record available.
Inventors
- 👤 George W Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:57
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0227; H05B1/0252; H05B1/0258; H05B1/0261; H05B1/0266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US915974A
Cited
US1542850A
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US1694264A
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US2552480A
Cited
US2510040A
Cited
US2490965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |