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发明名称
Grate construction
摘要
申请公布号
US1818744(A)
申请公布日期
1931.08.11
申请号
US19260154698
申请日期
1926.12.14
申请人
SAMUEL E. DARBY
发明人
PARKER RICHARD B.
分类号
C10J3/34
主分类号
C10J3/34
代理机构
代理人
主权项
地址
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