4. Metal treatment
  5. Compositions
  6. Heat treating

Heinz Kohl

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Method of manufacturing nonmagnetic drilling string components

Metal treatment – Compositions – Heat treating
Patent

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Process for producing...

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate

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Profile ID: LFUS-PAI-P-80618

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