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Application filed by 日本養蚕機材株式会社filedCritical日本養蚕機材株式会社
Priority to JP19404882UpriorityCriticalpatent/JPS5998768U/ja
Publication of JPS5998768UpublicationCriticalpatent/JPS5998768U/ja
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Publication of JPS6124060Y2publicationCriticalpatent/JPS6124060Y2/ja