Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source

Introduced: January 1980

Title

Titles differ between systems:

IPC: Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common or source

CPC: Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source

Full Title

Full titles differ between systems:

IPC:

Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators > Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common or source

CPC:

Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators (electro-acoustic transducers such as loudspeakers, microphones or gramophone pick-ups H04R; piezoelectric, electrostrictive or magnetostrictive devices with mechanical input or output, e.g. actuators or sensors, H10N30/00, H10N35/00) > Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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H03H 9/703 +1 CPC CPC only CPC only
H03H 9/72 Networks using surface acoustic waves since 1980 +1 CPC IPC+CPC Available in IPC and CPC