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 US494560Aexternal-prioritypatent/US3898733A/en
Priority claimed from US518459Aexternal-prioritypatent/US3922779A/en
Application filed by IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of CA1023534ApublicationCriticalpatent/CA1023534A/en