| http://www.w3.org/ns/prov#value | - Patent US7452313 - Convertible barrel exercise apparatus - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsA curved, partial barrel shaped body has a bottom surface shaped to rest on a portion of a planar surface such as a pad or a floor and an upper curved surface formed by a first cylindrical surface portion having a first radius of curva
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