发明名称 Method of clamping paper in a paper clip
摘要 A method of clamping paper in a paper clip is disclosed where the paper clip has spaced first and second opposed surfaces connected together at a rear edge and a cam member having a tab at one end thereof and a cam surface at another end thereof whereby the tab is moved between an open and closed position. The first and second opposed surfaces comprised of bent metal.
申请公布号 US7500301(B2) 申请公布日期 2009.03.10
申请号 US20050555375 申请日期 2005.11.02
申请人 ERGO INDUSTRIAL SEATING SYSTEMS INC 发明人 CASSADAY TERRY
分类号 B42F1/02 主分类号 B42F1/02
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