42 Research, Development, Design and Consultant Services in the Fields of Communications Network Control Systems, Radio and Television Systems, Combustion, Rockets, Gas Generators, Igniters, Analytical Chemistry, Microbiology, Electronic Component Design, Satellite Spin Systems, Lasers, Special Purpose Vehicles, Industrial Mixers, Pollution Control, Fire and Explosion Analysis, Electromagnetic Signal Measurement, Telephone Switching Equipment, Data Communications, Energy Systems and Solar Heating, All for Others