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 R L Soc D Etudes De Machines SfiledCriticalR L Soc D Etudes De Machines S
Application grantedgrantedCritical
Publication of AT180470BpublicationCriticalpatent/AT180470B/en