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发明名称
Golf instruction device
摘要
申请公布号
US2273416(A)
申请公布日期
1942.02.17
申请号
US19390282683
申请日期
1939.07.03
申请人
NORWOOD JOSEPH W
发明人
NORWOOD JOSEPH W.
分类号
A63B69/00
主分类号
A63B69/00
代理机构
代理人
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