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Friedrich Helling 1
Georg Merling 1
Rudolph Naatz 1
Ernst Schering 1

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Innovation 4

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Patent Model - Improvement in Cutter-Heads for Frizzing-Machines Rudolph Naatz

Patent Model - Improvement in Purifying Salicylic Acid by Dialysis Ernst Schering

Patent Model - Compound of Gamma-Oxypiperidin-Carboacids and Process for Making Same Georg Merling

Patent Model - Improvement in Furniture-Casters Friedrich Helling

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