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
CA712928A
Inventor
Hardaker John
R. Evans Richard
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.)
HER BRITANNIC MAJESTY'S PRINCIPAL SECRETARY OF STATE FOR WAR DEPARTMENT
Original Assignee
HER BRITANNIC MAJESTY'S PRINCIPAL SECRETARY OF STATE FOR WAR DEPARTMENT
Publication date
Application grantedgrantedCritical
Publication of CA712928ApublicationCriticalpatent/CA712928A/en