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
CA619998A
Inventor
Voigt Woldermar
W. Scarborough 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.)
Martin Co
Original Assignee
Robert W Scarborough
Woldermar Voigt
Martin Co
Publication date
Application grantedgrantedCritical
Publication of CA619998ApublicationCriticalpatent/CA619998A/en