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 US06/078,145external-prioritypatent/US4270921A/en
Application filed by IndividualfiledCriticalIndividual
Publication of DE3049885A1publicationCriticalpatent/DE3049885A1/en