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 | .~.~.~ By pivotal or rockable armature {2} | |
129 | DF | .~.~.~.~> Movable contacts or slidable card bar or comb |
130 | DF | .~.~.~.~> Movable contacts on circular card or comb structure |