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
CA771427A
Inventor
H. Royster Royall
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.)
DUDLEY B WILLIAMS
WILLIE Z MITCHELL JR
Original Assignee
DUDLEY B WILLIAMS
WILLIE Z MITCHELL JR
Publication date
Application grantedgrantedCritical
Publication of CA771427ApublicationCriticalpatent/CA771427A/en