US2997567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic laminations for high frequency inductors
Assignee: Ohio Crankshaft Co
•
Filing: 1959-05-15
•
Granted: 1961-08-22
•
Expires: 1979-05-15
Abstract
No abstract record available.
Inventors
- 👤 Daniel S Connelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:54
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/36; H01; H01F; H01F21/00; H01F21/02; H01F21/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1644729A
Cited
US2696593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |