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发明名称
Bar bell having collapsible chambers
摘要
申请公布号
US3231270(A)
申请公布日期
1966.01.25
申请号
US19620211911
申请日期
1962.07.23
申请人
MARVIN WINER
发明人
WINER MARVIN
分类号
A63B21/06;A63B21/072
主分类号
A63B21/06
代理机构
代理人
主权项
地址
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