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 Fernand AlloinfiledCriticalFernand Alloin
Priority to BE605917ApriorityCriticalpatent/BE605917A/fr
Publication of BE605917ApublicationCriticalpatent/BE605917A/fr