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
CA767956A
Inventor
S. Achler Howard
Kaufmann Harold
H. Lerner Herman
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.)
Kaufmann Tool and Engineering Co
Original Assignee
Kaufmann Tool and Engineering Co
Publication date
Application grantedgrantedCritical
Publication of CA767956ApublicationCriticalpatent/CA767956A/en