| http://www.w3.org/ns/prov#value | - More specifically, as shown in FIG. 4B, the common circuit board 22 is formed by a circuit board body 22a formed of a conductive material such as aluminum, an insulating layer 22b adhered on the entire upper surface of the circuit board body 22a, conductive layers 22c formed on the insulating layer 22b to have a predetermined circuit pattern and to define a circuit network, and circuit elements 22
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