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
CA676651A
Inventor
Malmgren Ake
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.)
LARS H WIDEGREN
RAGNAR L MUOTKA
Original Assignee
LARS H WIDEGREN
RAGNAR L MUOTKA
Publication date
Application grantedgrantedCritical
Publication of CA676651ApublicationCriticalpatent/CA676651A/en