US3469037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic transducer head with single record winding and plural reproduce windings
Assignee: IIT Research Institute
•
Filing: 1964-08-12
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Granted: 1969-09-23
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Expires: 1984-08-12
Abstract
No abstract record available.
Inventors
- 👤 Marvin Camras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:31
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/921; G; G11; G11B; G11B5/00; G11B5/127; G11B5/29; H04N5/78; H04N5/782; H04N5/7822
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2468198A
Cited
US3159822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |