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 US07/579,853external-prioritypatent/US5184949A/en
Application filed by R W Beckett CorporationfiledCriticalR W Beckett Corporation
Publication of HK1000215A1publicationCriticalpatent/HK1000215A1/en
Publication of HK1000215BpublicationCriticalpatent/HK1000215B/en