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
CA666700A
Inventor
Johns-Hunt John
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.)
Chubb and Son Ltd
Original Assignee
Chubb and Son Ltd
Publication date
Application grantedgrantedCritical
Publication of CA666700ApublicationCriticalpatent/CA666700A/en