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 to CA002014975ApriorityCriticalpatent/CA2014975A1/en
Application filed by Seiko Epson CorpfiledCriticalSeiko Epson Corp
Priority to EP90304268Aprioritypatent/EP0452580B1/en
Priority to SG1996002596Aprioritypatent/SG55020A1/en
Priority claimed from EP90304268Aexternal-prioritypatent/EP0452580B1/en
Priority to CN90102636Aprioritypatent/CN1056369A/en
Priority to US08/188,733prioritypatent/US5464670A/en
Publication of SG55020A1publicationCriticalpatent/SG55020A1/en