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 Rudolph Cornelius Osterstrom, Cary Richard WagnerfiledCriticalRudolph Cornelius Osterstrom
Priority to GR280101900ApriorityCriticalpatent/GR1900B/en
Publication of GR1900BpublicationCriticalpatent/GR1900B/en