Patent ID: 7971399

Claim:
A riser for use in constructing a stairway, said riser comprising: a front portion and a rear portion, the front portion including a tread-facing surface and an opposite, uppermost surface, and the rear portion including a tread-facing surface and an opposite, lowermost surface; wherein said riser defines: (a) at least one first through-hole that extends from the uppermost surface of the front portion through to the tread-facing surface of the front portion; (b) at least one second through-hole that extends from the lowermost surface of the rear portion through to the tread-facing surface of the rear portion; (c) at least one lower blind-hole located between the first and second through-holes, wherein the at least one lower blind-hole extends upward into the tread-facing surface of the front portion; and (d) at least one upper blind-hole located between the first and second through-holes, wherein the at least one upper blind-hole extends downward into the tread-facing surface of the rear portion.