4. Specialized metallurgical processes, compositions for use therei
  5. Processes
  6. Producing solid particulate free metal directly from liquid...

Aubert & Duval

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Case hardened steel with high tempering temperature, method...

Metal treatment – Stock – Carburized or nitrided
Reexamination Certificate

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Method and apparatus for producing powders

Metallurgical apparatus – Means for melting or vaporizing metal or treating liquefied... – Spray refining means
Patent

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Method and apparatus for producing powders

Specialized metallurgical processes – compositions for use therei – Processes – Producing solid particulate free metal directly from liquid...
Patent

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Tool steel composition

Alloys or metallic compositions – Ferrous – Chromium containing – but less than 9 percent
Reexamination Certificate

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