The Intellivision was introduced at the 1979 Las Vegas CES in January as a modular home computer with the Master Component priced at $165 and a soon-to-follow Keyboard Component also at $165. At Chicago CES in June, prices were revised to $250 for each component. A shortage of key chips from manufacturer General Instrument resulted in a limited number of Intellivision Master Components produced that year. In the fall, Sylvania marketed their Sylvania branded Intellivision at $280 in their GTE stores at Philadelphia, Baltimore, and Washington, D.C. On December 3rd, Mattel delivered Intellivisions to the Gottschalks department store chain headquartered in Fresno, California; having a suggested price of $275. The Intellivision was also listed in the nationally distributed JCPenney Christmas 1979 catalog along with seven cartridges. It was in stores nationwide by mid 1980 with a pack-in game ("Las Vegas Poker & Blackjack"), and a library of ten cartridges. Mattel Electronics became a subsidiary in 1981.