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
CA910586A
Inventor
Fitzer Erich
Overhoff Dietrich
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.)
Sigri GmbH
Original Assignee
Sigri Elektrograhit GmbH
Publication date
Application grantedgrantedCritical
Publication of CA910586ApublicationCriticalpatent/CA910586A/en