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Priority claimed from NO861319Aexternal-prioritypatent/NO158775C/en
Priority claimed from NO863868Aexternal-prioritypatent/NO162995C/en
Application filed by Winfried Peter BarbullafiledCriticalWinfried Peter Barbulla
Priority claimed from EP87850109Aexternal-prioritypatent/EP0240479B1/en
Application grantedgrantedCritical
Publication of ATE55227T1publicationCriticalpatent/ATE55227T1/en