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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H03H 11/12

using amplifiers with feedback ( , H03H11/08, H03H11/10 take precedence)

Introduced: January 1980

Title

Titles differ between systems:

IPC: using amplifiers with feedback

CPC: using amplifiers with feedback ( , H03H11/08, H03H11/10 take precedence)

Full Title

Full titles differ between systems:

IPC:

Networks using active elements > Multiple-port networks > Frequency selective two-port networks > using amplifiers with feedback

CPC:

Networks using active elements > Multiple-port networks > Frequency selective two-port networks > using amplifiers with feedback ( , H03H11/08, H03H11/10 take precedence)

Of 7 combined children, 0 exist in both systems.

7 codes are CPC-only extensions.

Child Classifications

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