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
CA848534A
Inventor
Lysyj Ihor
H. Nelson Kurt
H. Groeper Lawrence
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.)
Envirotech Corp
Original Assignee
Envirotech Corp
Publication date
Application grantedgrantedCritical
Publication of CA848534ApublicationCriticalpatent/CA848534A/en