The ornamental design for a snap-lock construction toy beam unit, as shown and described.
FIG. 1 illustrates a front, top, and side perspective view of a snap-lock construction toy beam unit according to the present invention.
FIG. 2 illustrates a top elevation view of the snap-lock construction toy beam unit according to FIG. 1.
FIG. 3 illustrates a bottom elevation view of the snap-lock construction toy beam unit according to FIG. 1.
FIG. 4 illustrates a side elevation view of the snap-lock construction toy beam unit according to FIG. 1.
FIG. 5 illustrates a front elevation view of the snap-lock construction toy beam unit according to FIG. 1; and,
FIG. 6 illustrates a cross-sectional side view of the snap-lock construction toy beam unit taken in the direction of line 6-6 in FIG. 2.
The dot-dash broken lines immediately adjacent the shaded areas represent the bounds of the claim and all other broken lines represent portions of the article that form no part of the claimed design. None of the broken lines form a part of the claim.