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 Henri Gustaaf Van BallaertfiledCriticalHenri Gustaaf Van Ballaert
Priority to BE596672ApriorityCriticalpatent/BE596672A/en
Publication of BE596672ApublicationCriticalpatent/BE596672A/en