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
CA845749A
Inventor
J. Cameron Russell
W. Hand John
R. Komarek Karl
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.)
Komarek-Greaves and Co
Berwind Corp
Original Assignee
Karl R Komarek
Komarek-Greaves and Co
Berwind Corp
Publication date
Application grantedgrantedCritical
Publication of CA845749ApublicationCriticalpatent/CA845749A/en