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
CA591639A
Inventor
Ernest W. Gommel Jr.
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.)
ALBERTA PHOENOX TUBE AND PIPE Ltd
Original Assignee
ALBERTA PHOENOX TUBE AND PIPE Ltd
Publication date
Application grantedgrantedCritical
Publication of CA591639ApublicationCriticalpatent/CA591639A/en