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.
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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 |
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代理人 |
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主权项 |
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地址 |
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