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
CA649611A
Inventor
Schwausch Erwin
Zeitler Anton
Bodmeier Gottfried
Gattnar Anton
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.)
Siemens Bauunion GmbH
Original Assignee
Siemens Bauunion GmbH
Publication date
Application grantedgrantedCritical
Publication of CA649611ApublicationCriticalpatent/CA649611A/en