US3086184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil structure for electromagnetic induction apparatus
Assignee: General Electric Co
•
Filing: 1957-03-26
•
Granted: 1963-04-16
•
Expires: 1977-03-26
Abstract
No abstract record available.
Inventors
- 👤 Frank S Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:53
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1870949A
Cited
US2000441A
Cited
US2470826A
Cited
US2544845A
Cited
GB666731A
Cited
US2659845A
Cited
US2761094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |