4. Horology: time measuring systems or devices
  5. Time interval
  6. Electrical or electromechanical

Ross G. Helft

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Apparatus for permitting quiet manual setting of an appliance ti

Communications: electrical – Audible indication
Patent

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Appliance timer

Horology: time measuring systems or devices – Time interval – Electrical or electromechanical
Patent

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Timing mechanism with improved electrical contacts

Electricity: circuit makers and breakers – Retarded – Clock train
Patent

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Profile ID: LFUS-PAI-P-760362

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