US2817073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multichannel tape system of storage
Assignee: Individual
•
Filing: 1954-08-11
•
Granted: 1957-12-17
•
Expires: 1974-08-11
Abstract
No abstract record available.
Inventors
- 👤 John R Sorrells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:16
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/05; G11B15/06; G11B15/56; G11B5/00; G11B5/008; G11B5/00813; G11B5/00817; G11B5/00821; G11B5/00826; G11B5/02; G11B5/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2335277A
Cited
US2553410A
Cited
US2625611A
Cited
US2579071A
Cited
US2633564A
Cited
US2700148A
Cited
US2685682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |