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Patent US2686278A successfully refreshed from Google Patents.
US2686278A
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Electromagnetic device
Assignee: Westinghouse Electric Corp
•
Filing: 1949-11-26
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Granted: 1954-08-10
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Expires: 1969-11-26
Abstract
No abstract record available.
Inventors
- 👤 Cyril E Baston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:34
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1053489A
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US1429009A
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US1331882A
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US1609324A
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US1726164A
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US1863836A
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US2096502A
Cited
GB566075A
Cited
US2505849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |