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.)
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Individual
Original Assignee
Individual
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Publication date
Priority claimed from US05/526,896external-prioritypatent/US3970841A/en
Application filed by IndividualfiledCriticalIndividual
Priority claimed from US05/682,907external-prioritypatent/US4023700A/en
Application grantedgrantedCritical
Publication of CA1035969ApublicationCriticalpatent/CA1035969A/en