4. Electricity: circuit makers and breakers
  5. Multiple circuit control
  6. Pivoted contact

Don W. Lake

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Digital multitone generator for telephone dialing

Communications: electrical – Audible indication – Percussion-type sound producer
Patent

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Digital multitone generator for telephone dialing

Communications: electrical – Audible indication – Percussion-type sound producer
Patent

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Digitally synthesized multi-frequency signal generator

Patent

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Switch selector and actuator

Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent

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Profile ID: LFUS-PAI-P-519415

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