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
CA844945A
Inventor
Bloomfield Harold
C. Purpura August
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.)
Bloomfield Industries Canada Ltd
Original Assignee
Bloomfield Industries Canada Ltd
Publication date
Application grantedgrantedCritical
Publication of CA844945ApublicationCriticalpatent/CA844945A/en