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Priority claimed from DE19863639261external-prioritypatent/DE3639261A1/de
Priority claimed from DE8708787Uexternal-prioritypatent/DE8708787U1/de
Application filed by Artur FoehlfiledCriticalArtur Foehl
Priority claimed from EP87907500Aexternal-prioritypatent/EP0289569B1/de
Application grantedgrantedCritical
Publication of ATE65166T1publicationCriticalpatent/ATE65166T1/de