4. Communications: electrical
  5. Condition responsive indicating system
  6. Specific condition

Richard L. Naugle

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Analog-to-digital converting apparatus

Communications: electrical – Audible indication – Percussion-type sound producer
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Digital-to-analog converting apparatus

Communications: electrical – Audible indication – Percussion-type sound producer
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Exit-entry sensing apparatus

Communications: electrical – Condition responsive indicating system – Specific condition
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Sensing apparatus

Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent

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Profile ID: LFUS-PAI-P-1353809

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