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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Priority claimed from US06/325,594external-prioritypatent/US4363646A/en
Priority claimed from US06/428,923external-prioritypatent/US4548196A/en
Priority claimed from US06/442,108external-prioritypatent/US4536361A/en
Application filed by IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of CA1200355ApublicationCriticalpatent/CA1200355A/fr