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 Premysl Fremunt, Bohumil Pacal, Jaroslav VarhanicekfiledCriticalPremysl Fremunt
Priority to CS41077ApriorityCriticalpatent/CS186630B1/cs
Publication of CS186630B1publicationCriticalpatent/CS186630B1/cs