Patent US2925538A successfully refreshed from Google Patents.
US2925538A
Expired / Lapsed
US
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Electromagnetic device
Assignee: Cutler Hammer Inc
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Filing: 1956-12-31
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Granted: 1960-02-16
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Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Reidar P C Rasmusen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:21
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/30; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |