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 US07/094,227external-prioritypatent/US4816014A/en
Application filed by Manville CorpfiledCriticalManville Corp
Application grantedgrantedCritical
Publication of ATE94809T1publicationCriticalpatent/ATE94809T1/en