| http://www.w3.org/ns/prov#value | - FIGS. 1a, 1b, and 1c show one embodiment of a filter-containing device of the invention in which a number of examples described below were carried out in which FIG. 1a is an expanded side view, FIG. 1b is a bottom view of each of the components making up the final device, and FIG. 1c is a top view of the assembled device.
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