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
CA822079A
Inventor
M. Van Lanen James
B. Smith Merritt
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.)
HIRAM WALKER AND SONS
Original Assignee
HIRAM WALKER AND SONS
Publication date
Application grantedgrantedCritical
Publication of CA822079ApublicationCriticalpatent/CA822079A/en