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发明名称
Valve
摘要
申请公布号
US2364929(A)
申请公布日期
1944.12.12
申请号
US19430474927
申请日期
1943.02.06
申请人
WALWORTH PATENTS INC.
发明人
TROTT ARTHUR J.
分类号
F16K21/04
主分类号
F16K21/04
代理机构
代理人
主权项
地址
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