Patent US2547065A successfully refreshed from Google Patents.
US2547065A
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Fluid cooled core for electromagnetic apparatus
Assignee: Ohio Crankshaft Co
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Filing: 1947-10-30
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Granted: 1951-04-03
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Expires: 1967-10-30
Abstract
No abstract record available.
Inventors
- 👤 James B Wadhams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:52
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/245; H01F27/08; H01F27/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US513420A
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US1331896A
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US2128086A
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US834148A
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US1394044A
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GB166613A
Cited
US1819481A
Cited
US1789229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |