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Application filed by Niels Erik WernbergfiledCriticalNiels Erik Wernberg
Priority to DK167456ApriorityCriticalpatent/DK87682C/da
Priority to DE1957W0017457prioritypatent/DE1748501U/de
Application grantedgrantedCritical
Publication of DK87682CpublicationCriticalpatent/DK87682C/da