ORA INTERNATIONAL
educational experiment kits primarily comprising electric circuits, electric components, namely, conductors, connectors, controllers, converters, fuses, sockets, and transformers, acoustic transducers, optical transducers, magnets, motors, gears, pulleys, axels, wheels, springs, belts, and pipes, sold as a unit for demonstrating principles of physics, mathematics, and related topics
Cancelled · April 22, 1996 · 75093679 ·