US3588851A
Expired / Lapsed
US
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Memory selection apparatus
Assignee: Honeywell Inc
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Filing: 1967-10-13
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Granted: 1971-06-28
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Expires: 1987-10-13
Abstract
Abstract ELECTRONIC SELECTION CIRCUITS FOR OPERATING COINCIDENT-CURRENT MAGNETIC MEMORIES, AND LIKE APPARATUS, ARE PROVIDED FOR CONSTRUCTION ESSENTIALLY ENTIRELY AS INTEGRATED CIRCUITS, EVEN THE OUTPUT DRIVE STAGES. THE CIRCUITS ARE ARRANGED TO TRANSFORM GROUND-REFERENCED INPUT SIGNALS TO OUTPUT SIGNALS FOR DRIVING FLOATING REACTANCES WITHOUT THE TRANSFORMERS REQUIRED IN THE PRIOR ART FOR VOLTAGE ISOLATION. FURTHER, THE NEW CIRCUITS DRIVE THESE REACTIVE LOADS WITHOUT EXCESSIVE POWER DISSIPATION OR EXCESSIVE TRANSIENT VOLTAGES.
Inventors
- 👤 William F Jordan Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:34
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06007; G11C11/06014; G11C11/06021; G11C11/06028; G11C11/06035; H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/615; H03K19/00; H03K19/02; H03K19/08; H03K19/082; H03K19/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |