Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Frederick Richard Nea StephensfiledCriticalFrederick Richard Nea Stephens
Priority to NO442972ApriorityCriticalpatent/NO135273C/no
Publication of NO135273BpublicationCriticalpatent/NO135273B/no
Publication of NO135273CpublicationCriticalpatent/NO135273C/no