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
CA903973A
Inventor
E. Mumma Charles
W. Barger John
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.)
DEPARTMENT OF ECONOMIC DEVELOPMENT
Original Assignee
DEPARTMENT OF ECONOMIC DEVELOPMENT
Publication date
Application grantedgrantedCritical
Publication of CA903973ApublicationCriticalpatent/CA903973A/en