US2959651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breakers
Assignee: Robertshaw Controls Co
•
Filing: 1957-10-24
•
Granted: 1960-11-08
•
Expires: 1977-10-24
Abstract
No abstract record available.
Inventors
- 👤 Charles K Strobel
- 👤 Guy F Conner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:06
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/14; H01H73/00; H01H73/22; H01H73/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1445207A
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GB159478A
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US2073103A
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US2043470A
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US2057093A
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US2148880A
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US2162343A
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US2202550A
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US2318076A
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US2595846A
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US2491032A
Cited
US2669625A
Cited
US2789180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |