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
CA861845A
Inventor
E. Rice 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.)
Comstock and Wescott Inc
Original Assignee
Comstock and Wescott Inc
Publication date
Application grantedgrantedCritical
Publication of CA861845ApublicationCriticalpatent/CA861845A/en