Patent US2644875A successfully refreshed from Google Patents.
US2644875A
Expired / Lapsed
US
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Air circuit breaker
Assignee: ROLLER SMITH CORP
•
Filing: 1948-07-01
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Granted: 1953-07-07
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Expires: 1968-07-01
Abstract
No abstract record available.
Inventors
- 👤 Archie R Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:40
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/44; H01H9/446; H01H9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1313176A
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US1811451A
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US2334562A
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US2340682A
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US2337949A
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US2416164A
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US2408352A
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US2417683A
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US2446027A
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US2446859A
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US2538370A
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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) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |