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发明名称
Quiet flow retarding device
摘要
申请公布号
US2089224(A)
申请公布日期
1937.08.10
申请号
US19360075474
申请日期
1936.04.20
申请人
BALTIMORE VALVE CORPORATION
发明人
PETERSON WALKER F.;WALTER ALBERT U.
分类号
E03D9/14
主分类号
E03D9/14
代理机构
代理人
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地址
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