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经营范围
发明名称
Safety gas cock
摘要
申请公布号
US1752043(A)
申请公布日期
1930.03.25
申请号
US19280246825
申请日期
1928.01.14
申请人
WILLIAM VAHL
发明人
VAHL WILLIAM
分类号
F23N5/04
主分类号
F23N5/04
代理机构
代理人
主权项
地址
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