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Application filed by 양경학, 강석운filedCritical양경학
Priority to KR2019820008075UpriorityCriticalpatent/KR840000561Y1/en
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Publication of KR840000561Y1publicationCriticalpatent/KR840000561Y1/en
Publication of KR840002407UpublicationCriticalpatent/KR840002407U/en