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 Peter Ing Drozd, Milan Ing GontfiledCriticalPeter Ing Drozd
Priority to CS854400ApriorityCriticalpatent/CS254673B1/cs
Publication of CS440085A1publicationCriticalpatent/CS440085A1/cs
Publication of CS254673B1publicationCriticalpatent/CS254673B1/cs