73195362
Dec 4, 1978
Nov 24, 1981
Electric and Electronic Kits Comprising Electrical and Electromechanical and Electronic Circuit Elements for Assembly into Completed Electrical and Electromechanical and Electronic Circuits by the Purchaser
Electrical and Scientific ApparatusEntertainment and Education Services Rendered in Person and Through the Media of Television in the Nature of Science Demonstrations and Experiments Featuring Electricity and Electronics
Education and EntertainmentDesign Services in the Form of Electrical and Electronic Circuits and/or Systems and in the Ornamental Configuration of Devices Incorporating Such Circuits and Systems
Computer and Scientific