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 Bunzel Delton WerkfiledCriticalBunzel Delton Werk
Publication of CH67931ApublicationCriticalpatent/CH67931A/de
CH67931A1913-09-221913-09-22Schaltradachsen-Sperrvorrichtung für Rechenmaschinen mit in entgegengesetzten Richtung drehbaren Stufenzylindern
CH67931A
(de)