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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H03K 19/018

using bipolar transistors only

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits > Coupling arrangements; Interface arrangements > using bipolar transistors only

CPC:

Logic circuits, i.e. having at least two inputs acting on one output (circuits for computer systems using fuzzy logic G06N7/02); Inverting circuits > Coupling arrangements; Interface arrangements (interface arrangements for digital computers G06F3/00, G06F13/00) > using bipolar transistors only

Of 4 combined children, 0 exist in both systems.

4 codes are CPC-only extensions.

Child Classifications

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