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
CA820040A
Inventor
Grandinetti Attilio
B. Curd Ralph
Dimen James
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.)
Electrographic Corp
Original Assignee
Electrographic Corp
Publication date
Application grantedgrantedCritical
Publication of CA820040ApublicationCriticalpatent/CA820040A/en