Patent US3430174A successfully refreshed from Google Patents.
US3430174A
Expired / Lapsed
US
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High dielectric strength inductance coil using pot type magnetic core
Assignee: NEC Corp
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Filing: 1967-07-03
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Granted: 1969-02-25
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Expires: 1987-07-03
Abstract
No abstract record available.
Inventors
- 👤 Masanori Kogo
- 👤 Kazuhiro Ishizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:21
CPC Classifications
H; H01; H01F; H01F37/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |