Patent US2490107A successfully refreshed from Google Patents.
US2490107A
Expired / Lapsed
US
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Hood and coil arrangement for induction furnaces
Assignee: Ohio Crankshaft Co
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Filing: 1946-02-04
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Granted: 1949-12-06
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Expires: 1966-02-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold A Strickland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:33
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1823873A
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US2005901A
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GB507531A
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US2266002A
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US2365021A
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US2325638A
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US2325810A
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US2322159A
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US2400660A
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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 |