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 filedfiledCritical
Priority to NL20786ApriorityCriticalpatent/NL11287C/xx
Priority to CH101173Dprioritypatent/CH101173A/de
Priority to FR543762Dprioritypatent/FR543762A/fr
Priority to GB31273/21Aprioritypatent/GB192830A/en
Application grantedgrantedCritical
Publication of NL11287CpublicationCriticalpatent/NL11287C/xx