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经营范围
发明名称
Valve
摘要
申请公布号
US2032316(A)
申请公布日期
1936.02.25
申请号
US19340722840
申请日期
1934.04.28
申请人
WALWORTH PATENTS INC.
发明人
COTTON CHARLES H.
分类号
F16K5/22
主分类号
F16K5/22
代理机构
代理人
主权项
地址
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