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
CA909222A
Inventor
Robert L. Duncan, Jr.
C. Helsley Grover
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.)
AH Robins Co Inc
Original Assignee
AH Robins Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA909222ApublicationCriticalpatent/CA909222A/en