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
CA257,927A
Inventor
Richard W. Phelps
Richard S. Tetro
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.)
Black Clawson Co
Original Assignee
Black Clawson 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
Priority claimed from US00362472Aexternal-prioritypatent/US3841577A/en
Application filed by Black Clawson CofiledCriticalBlack Clawson Co
Priority to CA257,927ApriorityCriticalpatent/CA1012119A/en
Application grantedgrantedCritical
Publication of CA1012119ApublicationCriticalpatent/CA1012119A/en