| http://www.w3.org/ns/prov#value | - Aug. 26 1986 Water Level Control Device Egberto Toro Waterproof Bath Water Level September 4, 1998 Audio Alarm ______________________________________ The control system disclosed by Butler utilizes solenoids and an electric control circuit including three switching means and electric timing means" such as a clock motor similar to that controlling the operation of a washing machine to initiate a
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