US2613309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contacting device for electric heating panels
Assignee: General Electric Co
•
Filing: 1950-11-15
•
Granted: 1952-10-07
•
Expires: 1970-11-15
Abstract
No abstract record available.
Inventors
- 👤 Frere Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:29
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; F24D13/022; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH225310A
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US2521540A
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US2540295A
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US2502148A
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US2502147A
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US2569916A
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US2582762A
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US2569961A
Cited
US2569921A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |