US3458785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fine and coarse motor positioning control for a magnetic disc memory
Assignee: International Business Machines Corp
•
Filing: 1966-09-07
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Granted: 1969-07-29
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Expires: 1986-09-07
Abstract
No abstract record available.
Inventors
- 👤 Frank J Sordello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/20; G05D3/203; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B5/596; G11B5/59633
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |