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 Gustav Ziehl SchwetofiledCriticalGustav Ziehl Schweto
Priority to GR560117065ApriorityCriticalpatent/GR17065B/el
Publication of GR17065BpublicationCriticalpatent/GR17065B/el