Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oscar Johan Christian RiisfiledCriticalOscar Johan Christian Riis
Application grantedgrantedCritical
Publication of DK45916CpublicationCriticalpatent/DK45916C/da
Fremgangsmaade til Adskillelse af Rygmaterialet ved Bøger, som er endeløst hæftet ved Boghæftemaskiner, og Boghæftemaskine til Fremgangsmaadens Udførelse.