Legal status (The legal status 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 status listed.)
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
Application filedfiledCritical
Priority to JP1987159273UpriorityCriticalpatent/JPH0163715U/ja
Priority to KR1019880008638Aprioritypatent/KR930000473B1/ko
Priority to DE3824578Aprioritypatent/DE3824578A1/de
Priority to US07/221,091prioritypatent/US4881959A/en
Publication of JPH0163715UpublicationCriticalpatent/JPH0163715U/ja