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发明名称
Press for printing spots of wax carbon on paper
摘要
申请公布号
US2260553(A)
申请公布日期
1941.10.28
申请号
US19400322456
申请日期
1940.03.06
申请人
CARB-O-SPOT CORPORATION
发明人
BOYD DONALD L.
分类号
B41L1/00
主分类号
B41L1/00
代理机构
代理人
主权项
地址
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