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经营范围
发明名称
Manufacture of artificially colored granules
摘要
申请公布号
US2422927(A)
申请公布日期
1947.06.24
申请号
US19450574967
申请日期
1945.01.27
申请人
BIRD & SON, INC.
发明人
REYNOLDS FRANK P.
分类号
E04D7/00
主分类号
E04D7/00
代理机构
代理人
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地址
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