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

David J. Englund

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Linear hearth furnace system and methods regarding same

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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Linear hearth furnace system and methods regarding same

Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Reexamination Certificate

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Linear hearth furnace system and methods regarding same

Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

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