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US2490104A
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Apparatus for equalized induction heating of workpieces
Assignee: Ohio Crankshaft Co
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Filing: 1945-04-12
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Granted: 1949-12-06
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Expires: 1965-04-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold A Strickland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:50
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/101; H05B6/102; G; G01; G01N; G01N3/00; G01N3/08; G01N3/18; H05B6/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1791934A
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US1834725A
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US1946876A
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US1943802A
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US2308043A
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US2383992A
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US2452197A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |