Although LG Electronics is far better known for consumer products such as TVs and refrigerators, the Korean electronics company also sells laptop computers -- just not in the United States. That situation just changed as LG introduced a high-end "Gram" series of ultrabook laptops that went on sale yesterday at The LG Gram series comes in three models, all weighing 2.16 pounds, which is lighter than Apple's 11-inch MacBook Air, which weighs a few ounces more.