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经营范围
发明名称
Emergency grate
摘要
申请公布号
US2380630(A)
申请公布日期
1945.07.31
申请号
US19420461296
申请日期
1942.10.08
申请人
SEARS, ROEBUCK AND CO.
发明人
CROSS ROBERT C.
分类号
F23H13/00
主分类号
F23H13/00
代理机构
代理人
主权项
地址
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