About this 3D model
A 3D model of U.S. Pat. No. 3,501,191. Cutting edge 1967 chopstick holding technology from the original Thingiverse—the U.S. PTO.
A 3D model of U.S. Pat. No. 3,501,191. Cutting edge 1967 chopstick holding technology from the original Thingiverse—the U.S. PTO.