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 Josef Ing SlowiakfiledCriticalJosef Ing Slowiak
Priority to CS832521ApriorityCriticalpatent/CS233784B1/en
Publication of CS252183A1publicationCriticalpatent/CS252183A1/en
Publication of CS233784B1publicationCriticalpatent/CS233784B1/en