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Application filed by Westdeutsche Binnenschiffahrts BerufsgenossenschaftfiledCriticalWestdeutsche Binnenschiffahrts Berufsgenossenschaft
Priority to NL3848ApriorityCriticalpatent/NL1463C/en
Application grantedgrantedCritical
Publication of NL1463CpublicationCriticalpatent/NL1463C/en