4. Metallurgical apparatus
  5. Means for melting or vaporizing metal or treating liquefied...
  6. Continuous refining

Frank Lawson

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Calcination of basic ferric sulphates

Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Patent

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Continuous sulphur drossing apparatus

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

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Continuous sulphur drossing process

Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent

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Ion exchange resin

Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate

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Method for the production of powder with high tannin content...

Solid material comminution or disintegration – Processes – With classifying or separating of material
Reexamination Certificate

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Profile ID: LFUS-PAI-P-751487

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