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
CA047942A
Inventor
J. Ferdinand Irwin
E. Handler Milton
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.)
Hirsh Manufacturing Co SA Co
Original Assignee
Hirsh Manufacturing Co SA 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 Hirsh Manufacturing Co SA CofiledCriticalHirsh Manufacturing Co SA Co
Priority to CA047942ApriorityCriticalpatent/CA924269A/en
Application grantedgrantedCritical
Publication of CA924269ApublicationCriticalpatent/CA924269A/en