75029041
Dec 7, 1995
Sep 2, 1997
electrical modules for hands on use by students and hobbyists, namely, power connection modules, slide switch modules, push-button switch modules, buzzer modules, motor modules, bulb modules, pulse generator modules, transducer driver modules, magnetic switch modules, and adapters and power cables for use therewith, together with instructional manuals and instructional video tape recordings relating to the electrical modules all sold as a unit
Electrical and Scientific Apparatus