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 DD17842674ApriorityCriticalpatent/DD111475A1/xx
Priority to DE19742460151prioritypatent/DE2460151A1/de
Priority to FR7502919Aprioritypatent/FR2263526B3/fr
Publication of DD111475A1publicationCriticalpatent/DD111475A1/xx
Priority to GB845675Aprioritypatent/GB1483858A/en
Priority to SU752109822Aprioritypatent/SU953612A1/ru