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
CA173,103A
Inventor
Richard C. Grace
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.)
Environment One Corp
Original Assignee
Environment One Corp
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
Priority claimed from CA118,195Aexternal-prioritypatent/CA966468A/en
Application filed by Environment One CorpfiledCriticalEnvironment One Corp
Priority to CA173,103ApriorityCriticalpatent/CA966470A/en
Application grantedgrantedCritical
Publication of CA966470ApublicationCriticalpatent/CA966470A/en