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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0334884 (1981-12-28) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 20 인용 특허 : 4 |
An article of footwear has upper and lower parts, wherein the lower part or sole has a plurality of roller-shaped portions separated from a remaining portion by depression. Four roller-shaped portions may be provided in four corners of the article. Two roller-shaped portions may be provided in each
An article of footwear, comprising an upper part; and a lower part formed as an integral member and connected with said upper part, said lower part having at least one roller-shaped portion extending above the lower surface of said lower part and a groove which partially circumferentially surrounds
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