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Priority claimed from SE8600335Aexternal-prioritypatent/SE450482B/sv
Application filed by Fred Atterby, Voss Schrader Bertil, Lennart TengqvistfiledCriticalFred Atterby
Application grantedgrantedCritical
Publication of ATE51837T1publicationCriticalpatent/ATE51837T1/de