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PCE
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DIFF Subgroup
H04Q 3/10

for PBX selectors, i.e. private branch exchange selectors

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Selecting arrangements > Circuit arrangements for receivers of routing digits > for PBX selectors, i.e. private branch exchange selectors

CPC:

Selecting arrangements (H04Q5/00 - H04Q11/00 take precedence) > Circuit arrangements for receivers of routing digits > for PBX selectors, i.e. private branch exchange selectors

No child classifications to compare. This is a leaf node in both IPC and CPC.