All Specifications subject to change without notice. "Logic Seal", "Waterline Venting", and "Water Transfer" are registered trademarks. They are protected by U.S. patent #'s 4,278,230; 4,091,069; and 4,151,243, respectively, Foreign patents granted or applied for. None of these processes may be used without a license which is free of charge and may be applied for only by users of genuine Logic Corp. Equipment.