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
CA917106A
Inventor
Schafer Manfred
Schafer Theo
Schafer Gerhard
Schafer 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.)
SCHAEFER SYSTEM INTERNATIONAL Ltd
Original Assignee
SCHAEFER SYSTEM INTERNATIONAL Ltd
Publication date
Application grantedgrantedCritical
Publication of CA917106ApublicationCriticalpatent/CA917106A/en