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 US07/077,834external-prioritypatent/US4744197A/en
Application filed by Manville CorpfiledCriticalManville Corp
Publication of NO891250D0publicationCriticalpatent/NO891250D0/no
Publication of NO891250LpublicationCriticalpatent/NO891250L/no
Publication of NO171960BpublicationCriticalpatent/NO171960B/no
Publication of NO171960CpublicationCriticalpatent/NO171960C/no