| http://www.w3.org/ns/prov#value | - A barrier layer associated with or attached, e.g. by lamination or other techniques, upon the surface of the fabric layer 12 upon which the heating/warming element 16 is affixed (e.g. barrier layers 62, 64; FIG. 6 and barrier layer 122; FIGS. 12???14, respectively) serves also to protect the circuit against the effects of abrasion that might otherwise deteriorate the quality or continuity of the e
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