Double convex cones, i.e. element having two convex cones, one at each

Official title: {Double convex cones, i.e. element having two convex cones, one at each of its opposite ends}

A61F2002/30207 (Double convex cones, i.e. element having two convex cones, one at each) appears on 73 US grants and 77 published applications in this corpus.