Toy building block

Description

1.1 : Perspective

1.2 : Rear and bottom side perspective view

1.3 : Front

1.4 : Back

1.5 : Left

1.6 : Right

1.7 : Top

1.8 : Bottom

It is used in building block toys; The broken lines shown in Figs. 1.1 to 1.8 illustrate portions of the toy building block that form no part of the claimed design.

Claims

The ornamental design for a toy building block as shown and described.