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Application filed by Keller & Knappich AugsburgfiledCriticalKeller & Knappich Augsburg
Priority to FI1221/71ApriorityCriticalpatent/FI53688C/fi
Application grantedgrantedCritical
Publication of FI53688BpublicationCriticalpatent/FI53688B/fi
Publication of FI53688CpublicationCriticalpatent/FI53688C/fi