Patent classifications
G
PHYSICS
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G11
INFORMATION STORAGE
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G11C
STATIC STORES
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17/00
Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
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G11C17/14
in which contents are determined by selectively establishing, breaking or modifying connecting links by permanently altering the state of coupling elements, e.g. PROM
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G11C17/146
Write once memory, i.e. allowing changing of memory content by writing additional bits
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