335 / | HD | ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS |
2 | DF | ELECTROMAGNETICALLY ACTUATED SWITCHES {30} |
106 | DF | .~ Multiple contact type {5} |
127 | DF | .~.~ Simultaneously actuated {2} |
128 | DF | .~.~.~ By pivotal or rockable armature {2} |
129 | .~.~.~.~ Movable contacts or slidable card bar or comb |