| 摘要 |
996,811. Toy building elements. H. HASEL. June 4, 1963 [June 9, 1962], No. 22248/63. Heading A6S. A toy building element has a hollow box shape, an open side, and grooves or ribs within parallel to said open side to engage ribs or grooves, respectively, on studs on the opposite face of a similar box-shaped element. |
