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
CA077,153A
Inventor
John A. Werner
Kenneth A. Schaefer
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
Koehring Co
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 Koehring CofiledCriticalKoehring Co
Priority to CA077,153ApriorityCriticalpatent/CA946654A/en
Application grantedgrantedCritical
Publication of CA946654ApublicationCriticalpatent/CA946654A/en