DIFF Main Group
H03H 3/00 Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
Introduced: September 1968
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
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- H03H 3/007 for the manufacture of electromechanical resonators or networks since 1980 +2 CPC IPC+CPC Available in IPC and CPC