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 Maslonka Frantisek, Jozef Ing SpanikfiledCriticalMaslonka Frantisek
Priority to CS844083ApriorityCriticalpatent/CS242497B1/cs
Publication of CS408384A1publicationCriticalpatent/CS408384A1/cs
Publication of CS242497B1publicationCriticalpatent/CS242497B1/cs