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 DD16360572ApriorityCriticalpatent/DD97115A1/xx
Publication of DD97115A1publicationCriticalpatent/DD97115A1/xx
Priority to DE19732326656prioritypatent/DE2326656A1/de
Priority to CS413973Aprioritypatent/CS175639B1/cs
Priority to SU731931988Aprioritypatent/SU605333A1/ru
