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
Priority claimed from US05/490,428external-prioritypatent/US4001317A/en
Priority claimed from AT542675Aexternal-prioritypatent/AT353766B/de
Application filed by Standard Oil Co OhiofiledCriticalStandard Oil Co Ohio
Priority to AT657077ApriorityCriticalpatent/AT370072B/de
Publication of ATA657077ApublicationCriticalpatent/ATA657077A/de
Application grantedgrantedCritical
Publication of AT370072BpublicationCriticalpatent/AT370072B/de