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发明名称
Digital sliding protractor
摘要
申请公布号
USD678086(S1)
申请公布日期
2013.03.19
申请号
US201129407907F
申请日期
2011.12.22
申请人
ZHANG MENG;ZHANG YANCHEN
发明人
ZHANG MENG;ZHANG YANCHEN
分类号
主分类号
代理机构
代理人
主权项
地址
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