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经营范围
发明名称
Supporting structure and ball releasably suspended therefrom
摘要
申请公布号
US3397885(A)
申请公布日期
1968.08.20
申请号
US19650497641
申请日期
1965.10.19
申请人
ROBERT A. NASH JR.
发明人
JR. ROBERT A. NASH,
分类号
A63B69/00
主分类号
A63B69/00
代理机构
代理人
主权项
地址
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