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发明名称
Valve
摘要
申请公布号
US1940990(A)
申请公布日期
1933.12.26
申请号
US19290381119
申请日期
1929.07.26
申请人
BALL TRUMAN P
发明人
BALL TRUMAN P.
分类号
F16K3/24
主分类号
F16K3/24
代理机构
代理人
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