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CS247786A1
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Self-alkanizing for mixture for tanning
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Self-basificating mixture for leather tanning tanning
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Self-alkalinizing mixture for tanning
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Equipment for exceedingly reagent production
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Tannery auxiliary agent production method
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Processing of combined cleaning agent
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Processing of dry tanning agents
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Method of producing tanner's aid
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Method of making the tannery auxilliary means
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Method of making the synthetic tanning agents
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Method of making white tanning tan
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Method of treating proteinaceous waste
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Method of preparing bleaching and filling tanning agent
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Tanner auxilliary means
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Method of producing synthetic stabilisers for drilling fluids
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Process for preparing synthetic tannins
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Process for preparing synthetic stabilizers of bored drilling fluids
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Process for preparing synthetic tannin
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CS180994B1
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Process for preparing synthetic auxiliary tanning materials
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