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发明名称
FLUSH TANK FILLING DEVICE AND ANTI-BACK FLOW VALVE
摘要
申请公布号
CA417867(A)
申请公布日期
1944.01.18
申请号
CAD417867
申请日期
申请人
JOHN B. PIERCE FOUNDATION
发明人
WILLIAM C. GROENIGER
分类号
主分类号
代理机构
代理人
主权项
地址
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