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经营范围
发明名称
Spring floated valve head
摘要
申请公布号
US2470700(A)
申请公布日期
1949.05.17
申请号
US19450622163
申请日期
1945.10.13
申请人
HENRY GUY J
发明人
HENRY GUY J.
分类号
F16K1/48
主分类号
F16K1/48
代理机构
代理人
主权项
地址
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