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发明名称
Cartographic material
摘要
申请公布号
US2943936(A)
申请公布日期
1960.07.05
申请号
US19560627981
申请日期
1956.12.13
申请人
KEUFFEL & ESSER COMPANY
发明人
SPECHLER DANIEL S.
分类号
G03F1/00
主分类号
G03F1/00
代理机构
代理人
主权项
地址
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