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Priority to JP4239674ApriorityCriticalpatent/JPS5650699B2/ja
Publication of JPS50135174ApublicationCriticalpatent/JPS50135174A/ja
Publication of JPS5650699B2publicationCriticalpatent/JPS5650699B2/ja
Injection molding methods, injection molding apparatus and injection nozzle devices for use in molding multiple-layer articles, and multiple-layer injection molded articles