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 PL22068579ApriorityCriticalpatent/PL120426B2/en
Publication of PL220685A2publicationCriticalpatent/PL220685A2/xx
Publication of PL120426B2publicationCriticalpatent/PL120426B2/en
PL22068579A1979-12-221979-12-22Method of inspection of welded joints and ultrasonic head therefor golovka dlja ispytanija svarnykh soedinenijj
PL120426B2
(en)