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US2692353A
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Control for electromagnets
Assignee: Dana Inc
•
Filing: 1950-10-14
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Granted: 1954-10-19
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Expires: 1970-10-14
Abstract
No abstract record available.
Inventors
- 👤 James A Mason
- 👤 Palmer Ralph Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:44
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23217E
Cited
US1155124A
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US1737846A
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GB461203A
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US2206823A
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US2436102A
Cited
US2427750A
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US2504996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |