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
CA771591A
Inventor
Clifford E. Herrick, Jr.
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.)
Sumner Williams Inc
Original Assignee
Sumner Williams Inc
Publication date
Application grantedgrantedCritical
Publication of CA771591ApublicationCriticalpatent/CA771591A/en