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
CA914283A
Inventor
W. Yungblut Charles
G. Mathison Victor
G. Fahlstrom Bo
M. Hayflick Robert
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.)
ELECTRA/MIDLAND Corp
Original Assignee
ELECTRA/MIDLAND Corp
Publication date
Application grantedgrantedCritical
Publication of CA914283ApublicationCriticalpatent/CA914283A/en