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

John W. Froeb

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Electrical encoding device

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

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Force transducer

Measuring and testing – Dynamometers – Responsive to force
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Rotary switch construction and method of making the same

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

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Rotary switch construction and method of making the same

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

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Profile ID: LFUS-PAI-P-1162049

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