4. Electrical resistors
  5. Incased, embedded, or housed
  6. Element inpowdered insulation with outer metallic sheath

Robert A. Ritt

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Cartridge heater

Electrical resistors – Incased – embedded – or housed – Element inpowdered insulation with outer metallic sheath
Patent

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Thermal switch and heater

Electricity: electrothermally or thermally actuated switches – Thermally actuated switches – Plural diverse actuating means in single switch
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1100510

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