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
CA845813A
Inventor
Ling Ko Yung
E. Ralston Robert
W. Stackhouse Glee
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.)
Duracell Inc USA
Original Assignee
PR Mallory and Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA845813ApublicationCriticalpatent/CA845813A/en