| 摘要 |
PROBLEM TO BE SOLVED: To provide a spacer for dirt floor concrete for a general building and a civil engineering structure, which is an inexpensive article prevented from being rusted by seepage water. SOLUTION: The mark 1 represents a part for being fitted into a lower bar of a lower end bar; the mark 2 represents a part for being placed on the upper bar of the lower end bar; and the mark 3 represents a part for receiving a setup bar for supporting an upper end bar. COPYRIGHT: (C)2007,JPO&INPIT
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