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专利名称：Sports training device发明人：Calvin Kwai On Lum申请号：US13224952申请日：20110902公开号：US08172696B2公开日：20120508
专利附图：
摘要：A training device for improving one's swing in a particular sport having aweighted member flexibly tethered to a handle. The handle is gripped swinging theweighted member against a target.
申请人：Calvin Kwai On Lum
地址：Simi Valley CA US
国籍：US
代理机构：Greenberg Traurig, LLP
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