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经营范围
发明名称
Selfseating valve
摘要
申请公布号
US2059684(A)
申请公布日期
1936.11.03
申请号
US19360059919
申请日期
1936.01.20
申请人
FELD ARWIN C
发明人
FELD ARWIN C.
分类号
B67D3/04
主分类号
B67D3/04
代理机构
代理人
主权项
地址
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