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 Gaspard ThienpontfiledCriticalGaspard Thienpont
Priority to BE595307ApriorityCriticalpatent/BE595307R/fr
Application grantedgrantedCritical
Publication of BE595307RpublicationCriticalpatent/BE595307R/fr
Priority to FR41398Aprioritypatent/FR1285064A/fr
Priority to DE1961T0013605prioritypatent/DE1839573U/de