US2981811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: General Electric Co
•
Filing: 1957-08-22
•
Granted: 1961-04-25
•
Expires: 1977-08-22
Abstract
No abstract record available.
Inventors
- 👤 Harry M Steven
- 👤 Raymond W Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:26
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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CH213490A
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US2306235A
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US2490514A
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US2783207A
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US2686242A
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US2703350A
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US2783208A
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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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |