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 DD18562075ApriorityCriticalpatent/DD118567A1/xx
Priority to DE19762610335prioritypatent/DE2610335A1/de
Publication of DD118567A1publicationCriticalpatent/DD118567A1/xx
Priority to SU762343710Aprioritypatent/SU655559A1/ru
Priority to GB15549/76Aprioritypatent/GB1518394A/en