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 filed by Geophysik VebfiledCriticalGeophysik Veb
Priority to PL19659777ApriorityCriticalpatent/PL109864B1/pl
Publication of PL196597A1publicationCriticalpatent/PL196597A1/pl
Publication of PL109864B1publicationCriticalpatent/PL109864B1/pl