Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards

Child Classifications

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• G11C 17/005
• G11C 17/02 using magnetic or inductive elements (G11C17/14 takes precedence)
• G11C 17/04 using capacitive elements (G11C17/06, G11C17/14 take precedence)
• G11C 17/06 using diode elements (G11C17/14 takes precedence)
• G11C 17/08 using semiconductor devices, e.g. bipolar elements (G11C17/06, G11C17/14 take precedence)
• G11C 17/14 in which contents are determined by selectively establishing, breaking or modifying connecting links by permanently altering the state of coupling elements, e.g. PROM