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 US346979Aexternal-prioritypatent/US3864305A/en
Priority claimed from US00346959Aexternal-prioritypatent/US3799788A/en
Priority claimed from CS741292Aexternal-prioritypatent/CS189624B2/en
Application filed by Cabot CorpfiledCriticalCabot Corp
Priority to CS772009ApriorityCriticalpatent/CS189641B2/en
Publication of CS189641B2publicationCriticalpatent/CS189641B2/en