4. Compositions
  5. Leather or fur treating

William H. Engelmann

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Foam injection leaching process for fragmented ore

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent

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Isoelectric drilling method

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
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Method of enhancing rock fragmentation and extending drill bit l

Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
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Rock fragmentation method

Compositions – Leather or fur treating
Patent

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Profile ID: LFUS-PAI-P-539350

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