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 Bedrich Sindelar, Frantisek JandafiledCriticalBedrich Sindelar
Priority to CS311377ApriorityCriticalpatent/CS188719B1/cs
Publication of CS188719B1publicationCriticalpatent/CS188719B1/cs