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 to DENDAT1287813DpriorityCriticalpatent/DE1287813B/de
Application filedfiledCritical
Priority to NL6513288Aprioritypatent/NL6513288A/xx
Priority to US585642Aprioritypatent/US3354972A/en
Priority to CH1458466Aprioritypatent/CH460373A/de
Publication of NL6513288ApublicationCriticalpatent/NL6513288A/xx
