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发明名称
Plug valve and plug valve combination
摘要
申请公布号
US2806602(A)
申请公布日期
1957.09.17
申请号
US19540445543
申请日期
1954.07.26
申请人
THE PATTERSON FOUNDRY & MACHINE CO.
发明人
CAWOOD RICHARD LAWRENCE
分类号
F16K27/06
主分类号
F16K27/06
代理机构
代理人
主权项
地址
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