US3332049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic core unit with shielded winding
Assignee: TDK Corp
•
Filing: 1965-11-30
•
Granted: 1967-07-18
•
Expires: 1985-11-30
Abstract
No abstract record available.
Inventors
- 👤 Hisano Takao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:52
CPC Classifications
H; H01; H01F; H01F30/00; H01F30/06; H01F30/10; H01F17/00; H01F17/04; H01F17/043; H01F19/00; H01F19/04; H01F19/06; H01F27/00; H01F27/24; H01F27/26; H01F27/266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |