CPC Main Group H01B 9/00 Power cables 8 direct subcodes Child Classifications Navigate with arrow keys, Enter to open H01B 9/001 H01B 9/003 H01B 9/005 H01B 9/006 H01B 9/008 H01B 9/02 with screens or conductive layers, e.g. for avoiding large potential gradients H01B 9/04 Concentric cables H01B 9/06 Gas-pressure cables; Oil-pressure cables; Cables for use in conduits under fluid pressure