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Priority claimed from US194523Aexternal-prioritypatent/US3115668A/en
Application filed by Townsend Engineering CofiledCriticalTownsend Engineering Co
Priority to DK41368ApriorityCriticalpatent/DK139412B/en
Publication of DK139412BpublicationCriticalpatent/DK139412B/en
Application grantedgrantedCritical
Publication of DK139412CpublicationCriticalpatent/DK139412C/da