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Raytheon Company, founded in 1922 and based in Waltham, Massachusetts, develops a variety of defense, aerospace, and commercial technologies. Originally, the firm developed radio tubes. It later employed radar technology in inventing microwave cooking products. The company also has developed guided missile and other defense systems. Raytheon is known for its Beechcraft (R) and Hawker (R) aircraft lines. The firm's Integrated Defense Systems unit is based in Tewksbury, Massachusetts. Its Intelligence and Information Systems business is based in Garland, Texas. The company also has missile, space, technical services, and other units in Arizona, California, Virginia, and Kansas. Raytheon employs 78,000 people worldwide. It had 2003 revenues of $18.1 billion. The firm was founded by Laurence K. Marshall, Vannevar Bush, and Charles G. Smith.
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