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Priority to JP2106289UpriorityCriticalpatent/JPH078817Y2/ja
Priority to US07/472,394prioritypatent/US5031591A/en
Publication of JPH02112938UpublicationCriticalpatent/JPH02112938U/ja
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Publication of JPH078817Y2publicationCriticalpatent/JPH078817Y2/ja