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专利名称：Apparatus for selectively varying the
stiffness of a ski
发明人：Piero G. Ruffinengo申请号：US08/253754申请日：19940603公开号：US05551720A公开日：19960903
摘要：A system for changing the stiffness of a ski having a boot sole with first andsecond movable portions, and a biasing device for urging the portions apart to addstiffness to the ski.
申请人：RUFFINENGO; PIERO G.
代理人：D. Peter Hochberg,Mark Kusner,Michael Jaffe
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