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
CA670643A
Inventor
Kaiser Herbert
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.)
Francis Shaw and Co Manchester Ltd
Original Assignee
Francis Shaw and Co Manchester Ltd
Publication date
Application grantedgrantedCritical
Publication of CA670643ApublicationCriticalpatent/CA670643A/en