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发明名称
Safety valve
摘要
申请公布号
US1990601(A)
申请公布日期
1935.02.12
申请号
US19310550256
申请日期
1931.07.11
申请人
GODSEY FRENCH E
发明人
GODSEY FRENCH E.
分类号
F22B37/42
主分类号
F22B37/42
代理机构
代理人
主权项
地址
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