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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 JP1987107229UpriorityCriticalpatent/JPH0718489Y2/ja
Application filedfiledCritical
Priority to US07/164,442prioritypatent/US4898499A/en
Priority to DE3844785Aprioritypatent/DE3844785C2/de
Priority to DE3844787Aprioritypatent/DE3844787C2/de
Priority to DE3807119Aprioritypatent/DE3807119A1/de
Priority to DE3844788Aprioritypatent/DE3844788C2/de
Priority to KR2019880003626Uprioritypatent/KR950001370Y1/ko
Publication of JPS6412719UpublicationCriticalpatent/JPS6412719U/ja
Application grantedgrantedCritical
Publication of JPH0718489Y2publicationCriticalpatent/JPH0718489Y2/ja
