US2750580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermediate magnetic core storage
Assignee: International Business Machines Corp
•
Filing: 1953-01-02
•
Granted: 1956-06-12
•
Expires: 1973-01-02
Abstract
No abstract record available.
Inventors
- 👤 Edward J Rabenda
- 👤 Gordon E Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:38
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F3/08; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06007; G11C11/06014; G11C11/06021; G11C11/06028; G11C11/06035; G11C11/06042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2696600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |