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with subscriber controlled access to an exchange line

with subscriber controlled access to an exchange line · Cooperative Patent Classification (CPC)

Electric circuits, power, telecommunications, and semiconductors.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	H04M9/005
Official title	{with subscriber controlled access to an exchange line}
Display label	with subscriber controlled access to an exchange line
Total patents	5

Year-over-year patent counts classified under this CPC code.

Filing activity appears to be declining based on the most recent years.

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.