Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network (constructional details of electromechanical transducers H03H9/00)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network

CPC: Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network (constructional details of electromechanical transducers H03H9/00)

Full Title

Full titles differ between systems:

IPC:

Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network

CPC:

Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network (constructional details of electromechanical transducers H03H9/00)

CPC subdivides this area 5x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

Note: 3 CPC extensions are marked as secondary classification only.

IPC defines codes here since 1980.

Child Classifications

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H03H 1/0007 CPC only CPC only
H03H 1/02 RC networks, e.g. filters since 1980 IPC+CPC Available in IPC and CPC
H03H 2001/0014 2nd only CPC only CPC only
H03H 2001/0021 2nd only +9 CPC CPC only CPC only
H03H 2001/0092 2nd only CPC only CPC only