Patent US2692318A successfully refreshed from Google Patents.
US2692318A
Expired / Lapsed
US
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Arc chamber for circuit breakers
Assignee: Clark Controller Co
•
Filing: 1951-03-31
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Granted: 1954-10-19
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Expires: 1971-03-31
Abstract
No abstract record available.
Inventors
- 👤 Few William
- 👤 Arald B Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:12
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/44; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44641; Y10T24/44769; Y10T24/44923
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2411893A
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US2650971A
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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) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |