Patent US2886669A successfully refreshed from Google Patents.
US2886669A
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Electromagnetic control device
Assignee: Cutler Hammer Inc
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Filing: 1956-12-24
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Granted: 1959-05-12
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Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Rudolph E Kelto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:23
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/20; H01H50/22; H01H50/30; H01H50/305; H01H11/00; H01H11/04; H01H11/06; H01H50/34; H01H50/44; H01H50/46; H01H50/64; H01H50/641
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2036295A
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US1563670A
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US2087895A
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US2378162A
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US2513695A
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US2692314A
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US2721963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |