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
CA889582A
Inventor
Wong Chih
G. Mcconchie Burton
W. Healy James
Witte Roy
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.)
United Carr Inc
Original Assignee
United Carr Inc
Publication date
Application grantedgrantedCritical
Publication of CA889582ApublicationCriticalpatent/CA889582A/en