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
CA668328A
Inventor
Ruhl Heinz
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.)
Westfalia Dinnendahl Groeppel AG
Original Assignee
Westfalia Dinnendahl Groeppel AG
Publication date
Application grantedgrantedCritical
Publication of CA668328ApublicationCriticalpatent/CA668328A/en