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
CA671946A
Inventor
Kasparek Hermann
Pfroepffer Klaus
C. Stark 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.)
Ravensberg GmbH
Original Assignee
Ravensberg GmbH
Publication date
Application grantedgrantedCritical
Publication of CA671946ApublicationCriticalpatent/CA671946A/en