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Priority claimed from DK532788Aexternal-prioritypatent/DK532788D0/en
Priority claimed from DK634688Aexternal-prioritypatent/DK165848C/en
Application filed by Rockwool IntfiledCriticalRockwool Int
Application grantedgrantedCritical
Publication of ATE78545T1publicationCriticalpatent/ATE78545T1/en