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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H03H 7/25

comprising an element controlled by an electric or magnetic variable (H03H7/27 takes precedence)

Introduced: January 1980

Title

Titles differ between systems:

IPC: comprising an element controlled by an electric or magnetic variable

CPC: comprising an element controlled by an electric or magnetic variable (H03H7/27 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Multiple-port networks comprising only passive electrical elements as network components > Frequency-independent attenuators > comprising an element controlled by an electric or magnetic variable

CPC:

Multiple-port networks comprising only passive electrical elements as network components > Frequency- independent attenuators > comprising an element controlled by an electric or magnetic variable (H03H7/27 takes precedence)

Of 3 combined children, 0 exist in both systems.

3 codes are CPC-only extensions.

Child Classifications

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