| 摘要 |
<p>PROBLEM TO BE SOLVED: To create a novel hooking piece for a clear file having an index case which is put between clear files and allows quick replacement of indices according to e.g. the type of documents.SOLUTION: A hooking piece which has an index case on the opened side or outside of the opened side of a clear file is formed by folding a protrusion part on the opened side of the clear file, and the folded inner end of the hooking piece is held between the hooking piece and the clear file by welder-fusing the outer end of the hooking piece to the clear file.</p> |
