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发明名称
BATTING AID AND METHOD OF USING SAME
摘要
申请公布号
CA816572(A)
申请公布日期
1969.07.01
申请号
CAD816572
申请日期
申请人
ARTHUR D. HALLEY
发明人
JACK HAMSON, JR.
分类号
主分类号
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