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The ornamental design for a treble stud construction toy block, as shown and described. |
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FIG. 1 is a top perspective view of treble stud construction toy block according to the invention;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a side elevational view thereof, the opposite side elevational view thereof being identical; and,
FIG. 6 is an end elevational view thereof, the opposite end elevational view thereof being identical.
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