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
CA822471A
Inventor
Ritter Josef
Gott Hans
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.)
EVG Entwicklungs und Verwertungs GmbH
Original Assignee
EVG Entwicklungs und Verwertungs GmbH
Publication date
Application grantedgrantedCritical
Publication of CA822471ApublicationCriticalpatent/CA822471A/en