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发明名称
Tracing apparatus
摘要
申请公布号
US2187574(A)
申请公布日期
1940.01.16
申请号
US19370177888
申请日期
1937.12.03
申请人
NIAGARA DUPLICATOR COMPANY
发明人
NIGRA FERDINAND
分类号
B43L5/00;B43L5/02;B43L13/04
主分类号
B43L5/00
代理机构
代理人
主权项
地址
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