4. Liquid purification or separation
  5. With alarm, indicator, register, recorder, signal or...
  6. Material level or thickness responsive

Michael T. Richardson

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Apparatus for recessing an electrical device in a wall

Electricity: conductors and insulators – Boxes and housings – With electrical device
Reexamination Certificate

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Battery status indicator

Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate

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Water detection means for fuel supply systems

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Material level or thickness responsive
Patent

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Profile ID: LFUS-PAI-P-1081338

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