Complex sentence: Starting in 1998, the engineering team of Kevin Nolan, Todd Vincent Graves, Charles Smith, and Royce Hunt designed the original Advantium, which went on sale in 1999, uses 234-volt AC power, and draws up to 25 amperes.
Split into simpler sentences: Starting in 1998, the engineering team of Kevin Nolan, Todd Vincent Graves, Charles Smith, and Royce Hunt designed the Advantium. The original model went on sale in 1999, uses 234-volt AC power, and draws up to 25 amperes.