Building block kit

Details Building block kit Building block kit

1987-10-05

1988-06-28

Hafer, Robert A.

Amusement devices: toys

Construction toy

52608, A63H 3304, E04B 504

Patent

active

047536225

ABSTRACT:
A set of building blocks is provided, each of identical size and shape. The block is of monolithic structure of elongated prismatic shape bounded by six flat faces and having an isosceles trapezoidal cross-sectional configuration. When properly arranged, interesting built structures are produced, especially when the faces of the blocks are of different colors.

REFERENCES:
patent: 907203 (1908-12-01), Walker
patent: 1106162 (1914-08-01), Rothig
patent: 1430557 (1922-10-01), Jervis
patent: 1656199 (1928-01-01), Hodgson
patent: 3396504 (1968-08-01), Oliveira
patent: 4121831 (1978-10-01), Greene
patent: 4210333 (1980-07-01), Shanin
patent: 4537001 (1985-08-01), Uppstrom
patent: 4602908 (1986-07-01), Kroeber

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