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
AU42461/68A
Inventor
KOLK and WILHELM WERTELEWSKI THEODOR
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.)
Becorit Grubenausbau GmbH
Original Assignee
Becorit Grubenausbau GmbH
Filing date
Publication date
Application filed by Becorit Grubenausbau GmbHfiledCriticalBecorit Grubenausbau GmbH
Publication of AU4246168ApublicationCriticalpatent/AU4246168A/en