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
CA706668A
Inventor
A. Eckerle Frank
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.)
NORTH RITE Ltd
Original Assignee
NORTH RITE Ltd
Publication date
Application grantedgrantedCritical
Publication of CA706668ApublicationCriticalpatent/CA706668A/en