DIFF Subgroup
H02H 7/22 for distribution gear, e.g. bus-bar systems; for switching devices
Introduced: September 1968
Full Title
Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions > for distribution gear, e.g. bus-bar systems; for switching devices
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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