4. Communications: electrical
  5. Audible indication
  6. Percussion-type sound producer

Robert Christen Madland

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Double depression magnetic keyswitch

Communications: electrical – Audible indication – Percussion-type sound producer
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Keyboard switch assembly having actuator interlocking keyboard s

Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
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Profile ID: LFUS-PAI-P-1335711

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