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 JP12999072Aexternal-prioritypatent/JPS5143508B2/ja
Priority claimed from JP47129991Aexternal-prioritypatent/JPS5229775B2/ja
Priority claimed from JP12998972Aexternal-prioritypatent/JPS4997047A/ja
Application filed by Sumitomo Bakelite CofiledCriticalSumitomo Bakelite Co
Publication of HK15080ApublicationCriticalpatent/HK15080A/en