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
CA755492A
Inventor
H. Geigenmiller Dudley
G. Matthews William
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.)
Smith and Winchester Manufacturing Co
Original Assignee
Smith and Winchester Manufacturing Co
Publication date
Application grantedgrantedCritical
Publication of CA755492ApublicationCriticalpatent/CA755492A/en