发明名称 Pen with retractable point
摘要 The pen consists of two pen bodies, preferably identical, which interlock with each other in a plurality of longitudinal positions. Each of the pen bodies is preferably provided with a seat for positioning a ball point cartridge therein. Movement of the pen bodies will cause the cartridges seated therein to be protracted or retracted.
申请公布号 US4266881(A) 申请公布日期 1981.05.12
申请号 US19780943009 申请日期 1978.10.18
申请人 INSTITUTE OF APPLIED BIOLOGY CHARITABLE RESEARCH TRUST 发明人 RUBENS, HARRY E.
分类号 B43K24/03;B43K27/08;(IPC1-7):B43K24/02;B43K27/12 主分类号 B43K24/03
代理机构 代理人
主权项
地址