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
CA889649A
Inventor
L. Wilde Robert
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.)
Koehring Co
Original Assignee
Robert L Wilde
Koehring Co
Publication date
Application grantedgrantedCritical
Publication of CA889649ApublicationCriticalpatent/CA889649A/en