US3069664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic storage systems
Assignee: TDK Micronas GmbH
•
Filing: 1959-07-24
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Granted: 1962-12-18
•
Expires: 1979-07-24
Abstract
No abstract record available.
Inventors
- 👤 Robert T Adams
- 👤 Barry M Mindes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:33
CPC Classifications
G; G11; G11C; G11C21/00; G11C21/02; G11C21/026; G11C8/00; G11C8/005; H; H04; H04J; H04J3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2790160A
Cited
US2612603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |