发明名称 |
Kit with integral sketching device |
摘要 |
A kit for guiding a user is drawing a trace includes a sketching device coupled to a paper tablet. The sketching device comprises a first pattern of raised bumps sized and positioned to form a plurality of intersecting grooves along the surface of the sketching device. |
申请公布号 |
US8057232(B2) |
申请公布日期 |
2011.11.15 |
申请号 |
US20090490123 |
申请日期 |
2009.06.23 |
申请人 |
HABERSTROH CHARLES;HABERSTROH MARTIN P. |
发明人 |
HABERSTROH CHARLES;HABERSTROH MARTIN P. |
分类号 |
G09B11/00 |
主分类号 |
G09B11/00 |
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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