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
CA645118A
Inventor
F. Bartz Raymond
M. Helland Howard
J. Vincent Clifton
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.)
LOCKPORT FELT Co
Original Assignee
LOCKPORT FELT Co
Publication date
Application grantedgrantedCritical
Publication of CA645118ApublicationCriticalpatent/CA645118A/en