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发明名称
Valve structure
摘要
申请公布号
US2766773(A)
申请公布日期
1956.10.16
申请号
US19540476633
申请日期
1954.12.21
申请人
GENERAL CONTROLS CO.
发明人
GRAYSON RICHARD D.
分类号
G05D23/275
主分类号
G05D23/275
代理机构
代理人
主权项
地址
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