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.)
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.)
A Dec Inc
Original Assignee
A Dec Inc
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 US06/272,011external-prioritypatent/US4415896A/en
Priority claimed from CA000483270Aexternal-prioritypatent/CA1212473A/fr
Application filed by A Dec IncfiledCriticalA Dec Inc
Priority to CA000519820ApriorityCriticalpatent/CA1259681A/fr
Application grantedgrantedCritical
Publication of CA1259681ApublicationCriticalpatent/CA1259681A/fr