335 / | HD | ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS |
2 | DF | ELECTROMAGNETICALLY ACTUATED SWITCHES {30} |
106 | DF | .~ Multiple contact type {5} |
127 | .~.~ Simultaneously actuated {2} | |
128 | DF | .~.~.~> By pivotal or rockable armature {2} |
131 | DF | .~.~.~> By reciprocating armature |