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
CA861485A
Inventor
M. Ferrara John
E. Ryder 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.)
Howe Baker Engineers LLC
Original Assignee
Howe Baker Engineers LLC
Publication date
Application grantedgrantedCritical
Publication of CA861485ApublicationCriticalpatent/CA861485A/en