| http://www.w3.org/ns/prov#value | - ansverse to the longitudinal axis, the bar including a base, a vertex edge opposite the base, and planar diversion surfaces diverging from the vertex edge; an air inlet port connectable to a source of pressurized air; and a plurality of air discharge ports connected to the air inlet port and intersecting one of the planar diversion surfaces, wherein at least one air discharge port intersects the v
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