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
CA889155A
Inventor
Jachna Waclaw
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.)
BIURO PROJEKTOW ZAKLADOW PRZEROBKI MECHANICZNEJ WEGLA
Original Assignee
BIURO PROJEKTOW ZAKLADOW PRZEROBKI MECHANICZNEJ WEGLA
Publication date
Application grantedgrantedCritical
Publication of CA889155ApublicationCriticalpatent/CA889155A/en