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发明名称
Grate structure
摘要
申请公布号
US2009450(A)
申请公布日期
1935.07.30
申请号
US19340728582
申请日期
1934.06.01
申请人
HULSON JOHN W
发明人
HULSON JOHN W.
分类号
F23H17/12
主分类号
F23H17/12
代理机构
代理人
主权项
地址
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