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.)
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.)
Alco Products Inc
Original Assignee
Harold M Alt
Oliver Westover
Alco Products Inc
Publication date
Application grantedgrantedCritical
Publication of CA542939ApublicationCriticalpatent/CA542939A/fr