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经营范围
发明名称
Endless band puzzle
摘要
申请公布号
US3235262(A)
申请公布日期
1966.02.15
申请号
US19620212816
申请日期
1962.07.27
申请人
WINTHROP-ATKINS CO., INC.
发明人
FRANKL ERNEST
分类号
A63F3/00;A63F9/08
主分类号
A63F3/00
代理机构
代理人
主权项
地址
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