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
CA213,514A
Inventor
Nelson D. Metzger
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.)
Amsted Industries Inc
Original Assignee
Amsted Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Amsted Industries IncfiledCriticalAmsted Industries Inc
Priority to CA213,514ApriorityCriticalpatent/CA1021728A/en
Application grantedgrantedCritical
Publication of CA1021728ApublicationCriticalpatent/CA1021728A/en