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
CA815788A
Inventor
Gram 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.)
Brodrene Gram AS
Original Assignee
Brodrene Gram AS
Publication date
Application grantedgrantedCritical
Publication of CA815788ApublicationCriticalpatent/CA815788A/en