| http://www.w3.org/ns/prov#value | - It will be observed that in cases of all forms of my invention, except that illustrated in Fig. 3, a single rack alone can sup port a table, chair, or other piece of furniture, it not being necessary to use a pair of racks, and the reason this is ossible is that the furniture-engaging brac et has more than two points of contact so situated that a straight line will not intersect more than two of t
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