发明名称 Writing instruments
摘要 A ball-point pen which includes a shaft 16 which engages with balls 10 and 18 of rubbery elastic material at each end, ball 10 acting as the cap of the pen. When dropped or thrown, these balls will cause it to bounce in an entertaining fashion. The shaft 16 also has a relatively soft rubber sleeve 28.
申请公布号 US6149333(A) 申请公布日期 2000.11.21
申请号 US19980159124 申请日期 1998.09.23
申请人 KERSHAW, JASON BRUCE 发明人 KERSHAW, JASON BRUCE
分类号 B43K23/08;B43K29/00;(IPC1-7):B43K23/00 主分类号 B43K23/08
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