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Brightening agents

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Patent

CA 839274

Knupfer Hans

D - Textiles – Paper – 06 – L
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Schellhammer Carl-Wolfgang

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Wirth Wolf-Dieter

C - Chemistry – Metallurgy – 08 – K
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Farbenfabriken Bayer Aktiengesellschaft

C - Chemistry – Metallurgy – 07 – D
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