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发明名称
Safety devices for gas systems
摘要
申请公布号
US2722945(A)
申请公布日期
1955.11.08
申请号
US19510206979
申请日期
1951.01.20
申请人
GRESHAM GEORGE C
发明人
GRESHAM GEORGE C.
分类号
F16K17/00
主分类号
F16K17/00
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代理人
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