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.)
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.)
OHIO INSULATER Co
Ohio Brass Co
Original Assignee
OHIO INSULATER Co
Ohio Brass Co
Publication date
Application grantedgrantedCritical
Publication of CA290426ApublicationCriticalpatent/CA290426A/fr