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 Reinhold Ilchmann August, Adolf Rauer Gustav, Ehregott RichterfiledCriticalReinhold Ilchmann August
Publication of CH30948ApublicationCriticalpatent/CH30948A/de