US2692934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency inductor arrangement for controlling the induced heat pattern
Assignee: Ohio Crankshaft Co
•
Filing: 1951-06-15
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Granted: 1954-10-26
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Expires: 1971-06-15
Abstract
No abstract record available.
Inventors
- 👤 James W Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:02
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/36; H05B6/40; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2240494A
Cited
US2167798A
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US2182341A
Cited
US2426053A
Cited
GB624444A
Cited
US2448012A
Cited
US2493771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |