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
CA782874A
Inventor
A. Billingham Carroll
W. Daring Kenneth
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.)
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Original Assignee
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Publication date
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Publication of CA782874ApublicationCriticalpatent/CA782874A/en