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
CA721640A
Inventor
A. Burke John
J. Sennhauser George
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.)
CHESAPEAKE AND OHIO RAILWAY Co
Original Assignee
CHESAPEAKE AND OHIO RAILWAY Co
Publication date
Application grantedgrantedCritical
Publication of CA721640ApublicationCriticalpatent/CA721640A/en