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US2517607A
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Induction heat-treating apparatus
Assignee: Ohio Crankshaft Co
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Filing: 1947-03-22
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Granted: 1950-08-08
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Expires: 1967-03-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold A Strickland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:49
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/101; H05B6/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2368809A
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US2255103A
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US2280064A
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US2308788A
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US2277564A
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US2408229A
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US2464727A
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US2399896A
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US2456091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |