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发明名称
Hectograph mass
摘要
申请公布号
US2412200(A)
申请公布日期
1946.12.10
申请号
US19410410653
申请日期
1941.09.12
申请人
BLUM JR ROBERT D
发明人
JR. ROBERT D. BLUM,
分类号
B41M5/06
主分类号
B41M5/06
代理机构
代理人
主权项
地址
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