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 Jan Ing Sichler, Doubal Karel, Jiri Pavlik, Rajsigl ZdenekfiledCriticalJan Ing Sichler
Priority to CS833917ApriorityCriticalpatent/CS231887B1/en
Publication of CS391783A1publicationCriticalpatent/CS391783A1/en
Publication of CS231887B1publicationCriticalpatent/CS231887B1/en