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 DD18963975ApriorityCriticalpatent/DD122629A1/xx
Publication of DD122629A1publicationCriticalpatent/DD122629A1/xx
Priority to CS744876Aprioritypatent/CS199363B1/cs
Priority to HU76TA1417Aprioritypatent/HU174985B/hu