专利名称：Spring file发明人：Nobuo Ishihara申请号：US07/243926申请日：19880913公开号：US04936055A公开日：19900626
摘要：A spring file comprises a coiled spring, the outer flattened periphery of which iscoated with abrasive particles so as to form a file face and the method of manufacturingthe same. In a first arrangement of the spring file, the coiled spring has the file facecoated with the abrasive particles and is joined to the tip of a hand grip. In a secondarrangement, the coiled spring has the file face coated with the abrasive particles and isof considerable length and thus used portions thereof can be removed by cutting off.
申请人：ISHIHARA; NOBUO
代理机构：Jones, Tullar & Cooper
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