Article of footwear
作者： Iosef Farberov
DOI:
关键词: Operations management 、 Forensic engineering 、 Engineering
摘要: An article of footwear has upper and lower parts, wherein the part or sole a plurality roller-shaped portions separated from remaining portion by depression. Four may be provided in four corners article. Two each corner.
lens.org 参考文章(3)
Carl E. Pace, Footwear with detachable symbols ,(1976)
Hans-Joachim Schaefer, Convertible sports device ,(1980)
Alexander C. Daswick, Shoe sole structure ,(1981)