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发明名称
Four-way valve
摘要
申请公布号
US1938869(A)
申请公布日期
1933.12.12
申请号
US19280270308
申请日期
1928.04.16
申请人
LAPLANT CHOATE MANUFACTURING CO., INC.
发明人
SHIMERDA CARROL D.
分类号
F15B13/06
主分类号
F15B13/06
代理机构
代理人
主权项
地址
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