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Priority to JP16800084UpriorityCriticalpatent/JPS6183533U/ja
Publication of JPS6183533UpublicationCriticalpatent/JPS6183533U/ja
Method of welding cap on laminated sheet cylinder coated with synthetic resin film on both surface and combination of cap and resin ring for executing same
Method of welding cap on laminated sheet cylinder coated with synthetic resin film on both surface and combination of cap and resin ring for executing same