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.)
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Publication date
Priority claimed from US07/047,006external-prioritypatent/US4841958A/en
Priority claimed from US07/053,098external-prioritypatent/US4856502A/en
Application filed by Minnesota Mining & MfgfiledCriticalMinnesota Mining & Mfg
Priority to SG93994ApriorityCriticalpatent/SG93994G/en
Publication of SG93994GpublicationCriticalpatent/SG93994G/en