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 filedfiledCritical
Priority to DD17712574ApriorityCriticalpatent/DD114873A1/xx
Priority to CS154075Aprioritypatent/CS187587B1/cs
Priority to PL17867775Aprioritypatent/PL94199B1/pl
Publication of DD114873A1publicationCriticalpatent/DD114873A1/xx