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经营范围
发明名称
Check valve permitting passage of physical object therethrough
摘要
申请公布号
US3334652(A)
申请公布日期
1967.08.08
申请号
US19640335944
申请日期
1964.01.06
申请人
FRANK WHEATLEY INDUSTRIES, INC.
发明人
JR. FRANK WHEATLEY,
分类号
F16K15/03
主分类号
F16K15/03
代理机构
代理人
主权项
地址
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