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
CA885742A
Inventor
B. Grewcock Sidney
A. Cooper Alan
E. Amos Arthur
Sylvester Paul
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.)
BARBER AND NICHOLLS Ltd
Original Assignee
BARBER AND NICHOLLS Ltd
Publication date
Application grantedgrantedCritical
Publication of CA885742ApublicationCriticalpatent/CA885742A/en