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Priority claimed from FI781164Aexternal-prioritypatent/FI58747C/fi
Application filed by Heikki S SuominenfiledCriticalHeikki S Suominen
Publication of DK158079ApublicationCriticalpatent/DK158079A/da
Publication of DK154548BpublicationCriticalpatent/DK154548B/da
Application grantedgrantedCritical
Publication of DK154548CpublicationCriticalpatent/DK154548C/da