US3412385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape transducing control system
Assignee: INSTITUTE FOR SOCIAL AND SCIENTIFIC DEVELOPMENT 376 EAST 400 SOUTH NO 315 SALT LAKE CITY UTAH 84111 A CORP OF UTAH
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Filing: 1964-11-12
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Granted: 1968-11-19
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Expires: 1984-11-12
Abstract
No abstract record available.
Inventors
- 👤 Ben C Wang
- 👤 Martyn A Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:19
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/11; G11B27/13; G11B2220/00; G11B2220/90
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) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |