differing in coefficient of friction

Full Title

Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof > having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis > differing in coefficient of friction