US2522994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuit interrupter
Assignee: General Electric Co
•
Filing: 1946-07-19
•
Granted: 1950-09-19
•
Expires: 1966-07-19
Abstract
No abstract record available.
Inventors
- 👤 Thellwell R Coggeshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:18
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US791548A
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US975285A
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US1021746A
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US1034000A
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US1487087A
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US2185719A
Cited
US2164175A
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US2098801A
Cited
US2199607A
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US2253009A
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US2250566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |