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
CA671602A
Inventor
Cumming John
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.)
GS Blakeslee and Co
Original Assignee
John Cumming
GS Blakeslee and Co
Publication date
Application grantedgrantedCritical
Publication of CA671602ApublicationCriticalpatent/CA671602A/en