Description
Nice vintage Joseph J. Tomalis Patent No. 2,507,231 Lic. 2 #3 Phillips screwdriver with cruciform bit and large wooden handle 12 inches. Antique made in USA collectible hand tools
The patent details a cruciform-shaped (cross-shaped) bit tip designed with optimized grooves and ribs to increase torque and reduce “cam-out” (slipping) during fastener. The patent was commonly used by manufacturers like Bridgeport, Craftsman, and Apex during the mid-20th century.
