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

Philip Piatkowski, Jr.

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Apparatus for generating an electrical signal indicative of liqu

Measuring and testing – Liquid level or depth gauge – Immersible electrode type
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Control circuit for variable reluctance motor

Electricity: motive power systems – Reciprocating or oscillating motor – Energizing winding circuit control
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Lamp failure monitoring system

Communications: electrical – Condition responsive indicating system – Specific condition
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System for detecting the failure of a filament lamp

Communications: electrical – Condition responsive indicating system – Specific condition
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Profile ID: LFUS-PAI-P-925327

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