On this day in 1921 Samuel M. Kass was granted the patent for Trench Weapon. U.S. Patent No. 1,376,888.
His invention related to weapons suitable for hand-to-hand conflict in front line positions, and particularly for the type of warfare known as trench warfare. The purpose of his invention is to enable a soldier to project a knife with great speed, force and accuracy and to recover it again.
