Improvements in Building-bricks and Brickwork Structures.

摘要

17,344. B³hler, J. July 25. Building-blocks, special shapes of.-Walls are built of hollow interlocking T-shaped blocks, and rectangular and square section blocks, respectively, formed by severing the limbs a only, or the limbs and web portions b, some of the T-shaped blocks being provided with ventilation holes.