| Original document(9 pages) Authorized document(9 pages) 中文版 |
This kind of pencils helps pupils to develop a correct pen-holding habit, so as to prevent teen-agers from being myopia and winding spine. This kind of pencils features that the pencil-holder, two ring three-partition type or one-ring three-partition type, is fixed onto the movable pencil by means of friction, adhesion or soldering and makes the pencil rotate 120 deg. when used so that the lead wears evenly and the structure is fairly simple. |
Application Number
申请号 |
86101523 |
Application Date
申请日 |
1986.07.09 |
| Title 名称 |
Fixed children's pencil |
Publication Number
公开号 |
1010920 |
Publication Date
公开日 |
1987.05.13 |
| Approval Pub. Date |
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Granted Pub. Date |
1992.05.27 |
| International Classification 分类号 |
B43K3/00,B43K23/02 |
Applicant(s) Name
申请人 |
Yu Zhiming |
| Address 地址 |
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| Inventor(s) Name 发明人 |
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| Attorney & Agent 代理人 |
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| More information 更 多 信 息 |
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