DE469292C
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Bituminous substances, e.g. B. coal pitch and sulfur, containing mass for the production of foundry models
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DE350494C
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Process for the production of high-percentage anthraquinone and its derivatives
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DE348088C
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Process for the production of a base material for paints, varnishes and the like like
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DE376085C
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Process for the production of cores for iron and metal foundries
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DE406245C
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Process for the production of anthraquinone and its derivatives
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DE336668C
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Process for the production of metal salts
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DE352726C
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Process for the production of highly viscous lubricating oils from coal tar oils
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DE350801C
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Process for the production of highly viscous lubricating oils from coal tar oils
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DE396018C
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Process for heating horizontal boilers with U-shaped flame tubes for the distillation of high-boiling products
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DE360492C
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Process for the preparation of low-boiling components from tar products and types of resin
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DE424194C
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Process for the production of permanent salts with malachite green base
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DE347902C
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Double tone printing inks
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DE368653C
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Process for the production of cores for foundries
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DE349036C
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Process for tanning animal skins
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