US2935583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnet control structure
Assignee: Oak Manufacturing Co
•
Filing: 1958-01-17
•
Granted: 1960-05-03
•
Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 Hugh A Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:13
CPC Classifications
H; H01; H01H; H01H36/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE520540C
Cited
US1530936A
Cited
GB346859A
Cited
US2543014A
Cited
US2310138A
Cited
US2410746A
Cited
US2373889A
Cited
US2520935A
Cited
US2795773A
Cited
US2770697A
Cited
US2803720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |