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
CA777084A
Inventor
E. Bell Robert
M. Allen William
W. Fick Charlie
M. Rockwood Albert
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.)
FRANK RESEARCH Corp
Original Assignee
FRANK RESEARCH Corp
Publication date
Application grantedgrantedCritical
Publication of CA777084ApublicationCriticalpatent/CA777084A/en