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发明名称
Book of carbon papers
摘要
申请公布号
US2273005(A)
申请公布日期
1942.02.17
申请号
US19410416901
申请日期
1941.10.28
申请人
BEACH JOHN B
发明人
BEACH JOHN B.
分类号
B41L1/16;B42D5/00
主分类号
B41L1/16
代理机构
代理人
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地址
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