4. Metallurgical apparatus
  5. Means for treating ores or for extracting metals
  6. By means applying heat to work, e.g., furnace

David O'Connor

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Odor removal system

Baths – closets – sinks – and spittoons – Ventilation – Electric-motor pump
Reexamination Certificate

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Trough having an erosion-resistant precast shape

Metallurgical apparatus – Means for treating ores or for extracting metals – By means applying heat to work – e.g. – furnace
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2478195

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