Legal status (The legal status 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 status listed.)
Expired
Application number
CA817712A
Inventor
Jager Wolfgang
Kossling Alfred
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VEB GEOPHYSIK LEIPZIG
Original Assignee
VEB GEOPHYSIK LEIPZIG
Publication date
Application grantedgrantedCritical
Publication of CA817712ApublicationCriticalpatent/CA817712A/en