US3484565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic transducer assembly with nonmagnetic core-holding inserts
Assignee: Nortronics Co Inc
•
Filing: 1967-11-22
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Granted: 1969-12-16
•
Expires: 1987-11-22
Abstract
No abstract record available.
Inventors
- 👤 Leonard E Kronfeld
- 👤 John W Hogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:15
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/10; G11B5/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3171903A
Cited
US3394362A
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US3348301A
Cited
US3358275A
Cited
US3357097A
Cited
US3340518A
Cited
US3359629A
Cited
US3412216A
Cited
US3330666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |