Patent US2931014A successfully refreshed from Google Patents.
US2931014A
Expired / Lapsed
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Magnetic core buffer storage and conversion system
Assignee: International Business Machines Corp
•
Filing: 1954-07-14
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Granted: 1960-03-29
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Expires: 1974-07-14
Abstract
No abstract record available.
Inventors
- 👤 Buchholz Werner
- 👤 Munro K Haynes
- 👤 Gordon E Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:10
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2652501A
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US2691154A
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US2708267A
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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) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |