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
Inventor
G. Bowen David
F. Cardy Charles
A. Crampton Clifford
Poole 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.)
Howards of Ilford Ltd
Original Assignee
Howards of Ilford Ltd
Publication date
Application grantedgrantedCritical
Publication of CA757662ApublicationCriticalpatent/CA757662A/en