US2833896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuit breakers of the air or gas-blast type
Assignee: British Thomson Houston Co Ltd
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Filing: 1956-02-21
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Granted: 1958-05-06
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Expires: 1976-02-21
Abstract
No abstract record available.
Inventors
- 👤 Roxburgh Albert
- 👤 Leigh Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:54
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; B; B66; B66F; B66F9/00; B66F9/06; C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; C08G59/1472; C08L; C08L63/00; C08L63/10; H01H33/02; H01H33/04; H01H33/16; H01H33/164
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2391826A
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US2453555A
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US2596254A
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US2581822A
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US2665351A
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US2794886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |