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经营范围
发明名称
Rubber sealed gate valve
摘要
申请公布号
US2510442(A)
申请公布日期
1950.06.06
申请号
US19450636714
申请日期
1945.12.22
申请人
VOLPIN ALEXANDER S
发明人
VOLPIN ALEXANDER S.
分类号
F16K3/24
主分类号
F16K3/24
代理机构
代理人
主权项
地址
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