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
CA114,679A
Inventor
Robert E. Ingham
Geoffrey W. Deith
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.)
Ingham R E and Co
Original Assignee
Ingham R E and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ingham R E and CofiledCriticalIngham R E and Co
Priority to CA114,679ApriorityCriticalpatent/CA939252A/en
Application grantedgrantedCritical
Publication of CA939252ApublicationCriticalpatent/CA939252A/en