| http://www.w3.org/ns/prov#value | - flat surface to said outer portion of said curvilinear wall, said clamping means including portions integrally connected thereto and extended outwardly from said other side of said base plate adjacent the opposite ends thereof and overlying opposite edges of said one side wall so as to confine said one side wall therebetween, said clamping means including means extending within the hollow interior
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