Patent US2689564A successfully refreshed from Google Patents.
Patent US2931571A successfully refreshed from Google Patents.
US2931571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic storage of multiple totals
Assignee: NCR Voyix Corp
•
Filing: 1951-04-11
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Granted: 1960-04-05
•
Expires: 1971-04-11
Abstract
No abstract record available.
Inventors
- 👤 Cebern B Trimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:14
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/32; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G11B5/00; G11B5/004; G11B5/74; G11B5/76
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |