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
CA701140A
Inventor
E. Schriner John
T. Czacherski Bruno
R. Masters Charles
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.)
EAGLE-PICHER Co
Original Assignee
EAGLE-PICHER Co
Publication date
Application grantedgrantedCritical
Publication of CA701140ApublicationCriticalpatent/CA701140A/en