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
CA739306A
Inventor
J. Nigrelli Biagio
E. Standley Wendell
I. Wittmann James
Boeckmann Hugo
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.)
JOHNS-NIGRELLI-JOHNS
Original Assignee
JOHNS-NIGRELLI-JOHNS
Publication date
Application grantedgrantedCritical
Publication of CA739306ApublicationCriticalpatent/CA739306A/en