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 JP47046041Aexternal-prioritypatent/JPS497403A/ja
Priority claimed from JP10011572Aexternal-prioritypatent/JPS5439441B2/ja
Priority claimed from JP47100207Aexternal-prioritypatent/JPS4955802A/ja
Application filedfiledCritical
Publication of NL7306402ApublicationCriticalpatent/NL7306402A/xx