US2655588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency inductor
Assignee: Ohio Crankshaft Co
•
Filing: 1949-08-19
•
Granted: 1953-10-13
•
Expires: 1969-08-19
Abstract
No abstract record available.
Inventors
- 👤 James B Wadhams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:59
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/36; H05B6/362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1900842A
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US2184281A
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US2180280A
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US2371459A
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US2401899A
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US2428303A
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US2397629A
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US2385904A
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US2408190A
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US2448012A
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US2479980A
Cited
GB616063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |