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
CA867856A
Inventor
Rosenkranz Otto
Seifert Karl-Heinrich
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.)
Heidenreich and Harbeck GmbH
Original Assignee
Heidenreich and Harbeck GmbH
Publication date
Application grantedgrantedCritical
Publication of CA867856ApublicationCriticalpatent/CA867856A/en