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经营范围
发明名称
Gas valve
摘要
申请公布号
US1802496(A)
申请公布日期
1931.04.28
申请号
US19270198887
申请日期
1927.06.15
申请人
JOHANN BERNHARD
发明人
BERNHARD JOHANN
分类号
F16K35/02
主分类号
F16K35/02
代理机构
代理人
主权项
地址
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