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 DE1958W0020579external-prioritypatent/DE1778829U/en
Priority claimed from DEW25705Aexternal-prioritypatent/DE1126757B/en
Priority claimed from DEW26417Aexternal-prioritypatent/DE1145045B/en
Application filed by Georg Wiegandt & SoehnefiledCriticalGeorg Wiegandt & Soehne
Publication of BE583246ApublicationCriticalpatent/BE583246A/en