4. Electric heating
  5. Heating devices
  6. With heating unit structure

Henry Keep, Jr.

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Electrical heating cable connector

Electric heating – Heating devices – With heating unit structure
Patent

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Heat treating appliance and cable

Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent

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Railroad switch heater

Railway switches and signals – Switches – Snow protected
Patent

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Railroad switch heater

Railway switches and signals – Switches – Snow protected
Patent

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Profile ID: LFUS-PAI-P-316503

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