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
CA241,826A
Inventor
Richard N. Edwards
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.)
Individual
Original Assignee
Individual
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 CA179,156Aexternal-prioritypatent/CA994929A/en
Application filed by IndividualfiledCriticalIndividual
Priority to CA241,826ApriorityCriticalpatent/CA1006992A/en
Application grantedgrantedCritical
Publication of CA1006992ApublicationCriticalpatent/CA1006992A/en