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发明名称
Self-cleansing valve mechanism
摘要
申请公布号
US1968320(A)
申请公布日期
1934.07.31
申请号
US19310512723
申请日期
1931.01.31
申请人
THE KOPPERS COMPANY OF DELAWARE
发明人
SHIVELY WALTER L.
分类号
F16K29/00
主分类号
F16K29/00
代理机构
代理人
主权项
地址
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