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 Hartmann Mfg CofiledCriticalHartmann Mfg Co
Priority to AT628063ApriorityCriticalpatent/AT245394B/de
Application grantedgrantedCritical
Publication of AT245394BpublicationCriticalpatent/AT245394B/de