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Application filed by Rudolf KronfiledCriticalRudolf Kron
Publication of CH80969ApublicationCriticalpatent/CH80969A/de
CH80969A1918-11-191918-11-19Verfahren zur Gewinnung saugfähiger Fasern zur Herstellung von Rohpappe zur Dach- und Unterlagspappefabrikation
CH80969A
(de)