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Priority claimed from DE19853504869external-prioritypatent/DE3504869C2/en
Priority claimed from DE3516441Aexternal-prioritypatent/DE3516441C2/en
Application filed by Spier GmbhfiledCriticalSpier Gmbh
Application grantedgrantedCritical
Publication of ATE37346T1publicationCriticalpatent/ATE37346T1/en