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Publication of NO791966LpublicationCriticalpatent/NO791966L/no
Application filed by Henry Anderson SpencerfiledCriticalHenry Anderson Spencer
Priority to NO791966ApriorityCriticalpatent/NO147328C/no
Publication of NO147328BpublicationCriticalpatent/NO147328B/no
Publication of NO147328CpublicationCriticalpatent/NO147328C/no