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发明名称
Scriber and ellipsograph
摘要
申请公布号
US1743024(A)
申请公布日期
1930.01.07
申请号
US19270201447
申请日期
1927.06.25
申请人
CLARK EDWARD O
发明人
CLARK EDWARD O.
分类号
B43L11/02
主分类号
B43L11/02
代理机构
代理人
主权项
地址
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