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
CA843270A
Inventor
W. Absolon Eric
H. Bowman George
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.)
Avery Hardoll Ltd
Beck and Co Meters Ltd
Original Assignee
Eric W Absolon
Avery Hardoll Ltd
Beck and Co Meters Ltd
Publication date
Application grantedgrantedCritical
Publication of CA843270ApublicationCriticalpatent/CA843270A/en