Patent DE1132220B successfully refreshed from Google Patents.
US2935734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memory selecting system
Assignee: NCR Voyix Corp
•
Filing: 1954-08-17
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Granted: 1960-05-03
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Expires: 1974-08-17
Abstract
No abstract record available.
Inventors
- 👤 John F Donan
- 👤 Daniel J Daugherty
- 👤 Willis E Dobbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:43
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/12; G11C; G11C11/00; G11C11/02; G11C11/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2692728A
Cited
US2540654A
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US2614169A
Cited
US2680239A
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US2721990A
Cited
US2679638A
Cited
US2702380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |