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
CA719853A
Inventor
H. Porter John
I. W. Moore Arthur
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.)
PRODUCTION ENGINEERING RESEARCH ASSOCIATION OF GREAT BRITAIN
Original Assignee
PRODUCTION ENGINEERING RESEARCH ASSOCIATION OF GREAT BRITAIN
Publication date
Application grantedgrantedCritical
Publication of CA719853ApublicationCriticalpatent/CA719853A/en