제목 | Writing combined into one sharp and a ballpoint pen | ||||
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분야 | 실용제품및기타발명 | 년도 | 2014 | ||
업체명 | Kumoh National Institute of Technology Industry Cooperation Foundation | 등록번호 | 10-2014-0136612 | 등록일 | 2014-12-15 |
one side can be used as a mechanical pencil while the other side can be used as a ball pen.
features when you use this product you can: 1. has a good grip 3. manufactured easily 4. can remove remaining lead
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이전글 | Paper spaceship kit(spacecharmi ??) |
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다음글 | Print paper to make the picture frame |