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US5947787A Modular lattice substructure for a toy building set 失效
用于玩具建筑物的模块化格子子结构

Modular lattice substructure for a toy building set
摘要:
The modular lattice substructure for a playing structure, such as a toy building set, includes elongate beams, elongate joists, and columns having a height greater than the height of the elongate beams and joists. The sides of the columns have a protrusion connector removably attachable to a slot connector in the ends of the elongate beams and the ends of the elongate joists.
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