| 摘要 |
PCT No. PCT/KR85/00010 Sec. 371 Date Dec. 30, 1985 Sec. 102(e) Date Dec. 30, 1985 PCT Filed Apr. 30, 1985 PCT Pub. No. WO85/05140 PCT Pub. Date Nov. 21, 1985.A box-type masonry block comprising a quadrangular or H-type concrete block body provided at the interior thereof with a space. The block also includes an engaging step formed at inner upper surface of said block body, an engaging protrusion formed at lower surface of said block body, and a fixing rod-receiving hole formed at each corner of said block body.
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