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发明名称
Valve mechanism
摘要
申请公布号
US2102752(A)
申请公布日期
1937.12.21
申请号
US19350046543
申请日期
1935.10.24
申请人
SCHOENFELD FRANK H
发明人
SCHOENFELD FRANK H.
分类号
G05D23/02
主分类号
G05D23/02
代理机构
代理人
主权项
地址
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