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
CA768443A
Inventor
Howard Edward
E. Smith Andrew
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.)
S&RJ Everett and Co Ltd
Original Assignee
S&RJ Everett and Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA768443ApublicationCriticalpatent/CA768443A/en