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 George L HerterfiledCriticalGeorge L Herter
Priority to BE600013ApriorityCriticalpatent/BE600013A/fr
Publication of BE600013ApublicationCriticalpatent/BE600013A/fr