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
CA817340A
Inventor
M. Harrison Alan
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.)
Welwyn Plastics 1955 Ltd
Original Assignee
Welwyn Plastics 1955 Ltd
Publication date
Application grantedgrantedCritical
Publication of CA817340ApublicationCriticalpatent/CA817340A/en