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
Priority claimed from DEB62104Aexternal-prioritypatent/DE1258824B/de
Priority claimed from DEB63516Aexternal-prioritypatent/DE1226530B/de
Priority claimed from DEB66556Aexternal-prioritypatent/DE1240035B/de
Application filed by Brueggemann KommanditgesellschfiledCriticalBrueggemann Kommanditgesellsch
Publication of BE616350ApublicationCriticalpatent/BE616350A/fr