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发明名称
Coated or color granular material
摘要
申请公布号
US2298277(A)
申请公布日期
1942.10.13
申请号
US19390265606
申请日期
1939.04.01
申请人
MINNESOTA MINING & MANUFACTURING COMPANY
发明人
JR. HOWARD B. BURTON,
分类号
E04D7/00
主分类号
E04D7/00
代理机构
代理人
主权项
地址
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