| http://www.w3.org/ns/prov#value | - A chair as recited in claim 4 wherein one of said secondary support rods comprises an upper back support rod; and wherein said attachment means for said upper back support rod comprises: means defining a threaded opening in each end of said upper back support rod; a mechanical fastener for each tube, each fastener including a head and a threaded shank, said shank having a diameter smaller enough t
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