Patent US2144372A successfully refreshed from Google Patents.
US2144372A
Expired / Lapsed
US
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Electric circuit breaker
Assignee: BBC Brown Boveri AG Germany
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Filing: 1936-01-23
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Granted: 1939-01-17
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Expires: 1956-01-23
Abstract
No abstract record available.
Inventors
- 👤 Haller Arnold
- 👤 Thommen Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:43
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/12; H01H33/121; H01H33/125; H01H33/128; H01H33/28; H01H33/30; H01H33/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-01-16 | 1942-07-18 | 1943-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-01-16 | 1946-07-18 | 1947-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-01-16 | 1950-07-18 | 1951-01-17 | $7700.00 | Window Closed / Lapsed |