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
CA844591A
Inventor
R. Backhurst John
Fleischmann Martin
Goodridge Francis
E. Plimley Raymond
Original Assignee
National Research Development Corp UK
Publication date
Application grantedgrantedCritical
Publication of CA844591ApublicationCriticalpatent/CA844591A/en