Gulf & Western Industries said it has completed the sale of its consumer and industrial products group to Wickes Cos. . . . The Federal Reserve Board has postponed its report on July’s consumer installment credit until Monday . . . Frontier Airlines plans a special shareholders’ meeting for Oct. 30 to vote on a previously reported employee buy-out of the Denver-based carrier . . . Moody’s said it has downgraded Baxter Travenol Laboratories’ senior debt rating to A3 from A1 and American Hospital Supply’s senior debt rating to A3 from AA2 . . . The Investment Company Institute reported that the assets of the nation’s 350 money-market mutual funds fell $520.6 million in the week ended Sept. 11 . . . The Los Angeles Department of Water and Power reported that electric production for the week ended Sept. 7 dropped 21.94% from the week before.