4. C - Chemistry, Metallurgy
  5. 21
  6. B

Alexander Y. Valchev

C - Chemistry – Metallurgy – 21 – B

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Apparatus for the production of protective coating for...

B - Operations – Transporting – 05 – B
Patent

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Method and device for treating and refining liquid metal...

C - Chemistry – Metallurgy – 25 – C
Patent

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Method for forming a protective coating on carbon electrodes

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Method for producing steel in an electric furnace by direct...

H - Electricity – 05 – B
Patent

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Method for steelmaking with direct current

C - Chemistry – Metallurgy – 21 – B
Patent

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Profile ID: LFCA-PAI-P-219345

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