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Helmut Brueninghaus & Co Leder
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Helmut Brueninghaus & Co Leder
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Application filed by Helmut Brueninghaus & Co LederfiledCriticalHelmut Brueninghaus & Co Leder
Priority to DE1953B0015344priorityCriticalpatent/DE1668795U/de
Publication of DE1668795UpublicationCriticalpatent/DE1668795U/de
Verfahren zur Herstellung von neuen 1-(3',5'-Dihydroxy- bzw. -acyloxy-phenyl)-2-alkylaminoäthanolen und deren physiologisch verträglichen Säureadditionssalzen
Verfahren zum Herstellen eines für das Einrahmen von Mikrofilmabschnitten bestimmten Öffnungsbereiches einer Karteikarte und nach dem Verfahren hergestellte, mit einer Öffnung versehene Karteikarte