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
CA733288A
Inventor
Wilk Emil
H. Krengel Theodore
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.)
Allied Tube and Conduit Corp
Original Assignee
Allied Tube and Conduit Corp
Publication date
Application grantedgrantedCritical
Publication of CA733288ApublicationCriticalpatent/CA733288A/en