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经营范围
发明名称
Draft regulator
摘要
申请公布号
US2246619(A)
申请公布日期
1941.06.24
申请号
US19380235807
申请日期
1938.10.19
申请人
COLE ARTHUR D
发明人
COLE ARTHUR D.
分类号
F23L13/00
主分类号
F23L13/00
代理机构
代理人
主权项
地址
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