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
CA905064A
Inventor
J. Kisker Laurence
G. Mathewson William
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.)
J W CLEMENT CO
Original Assignee
J W CLEMENT CO
Publication date
Application grantedgrantedCritical
Publication of CA905064ApublicationCriticalpatent/CA905064A/en