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发明名称
Carbon paper
摘要
申请公布号
US2496856(A)
申请公布日期
1950.02.07
申请号
US19460676251
申请日期
1946.06.12
申请人
COOK JR CHARLES B
发明人
JR. CHARLES B. COOK,
分类号
B41M5/10
主分类号
B41M5/10
代理机构
代理人
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