US3045884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape drive control system
Assignee: AT&T Inc
•
Filing: 1959-06-04
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Granted: 1962-07-24
•
Expires: 1979-06-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Buhrendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:14
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB685032A
Cited
US2706270A
Cited
US2774026A
Cited
US2831678A
Cited
US2809335A
Cited
US2863108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |