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 JP60136179Aexternal-prioritypatent/JPS61295075A/en
Priority claimed from JP60136180Aexternal-prioritypatent/JPS61295079A/en
Application filed by Canon KkfiledCriticalCanon Kk
Priority claimed from EP19860300322external-prioritypatent/EP0208385B1/en
Application grantedgrantedCritical
Publication of ATE65462T1publicationCriticalpatent/ATE65462T1/en