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
CA895416A
Inventor
J. Kennedy Norman
W. H. Watt Robert
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.)
WILLCOX AND GIBBS
Original Assignee
WILLCOX AND GIBBS
Publication date
Application grantedgrantedCritical
Publication of CA895416ApublicationCriticalpatent/CA895416A/en