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经营范围
发明名称
Periodic valve mechanism
摘要
申请公布号
US2361773(A)
申请公布日期
1944.10.31
申请号
US19420437603
申请日期
1942.04.03
申请人
SARA E. RIEK;FOREST O. RIEK
发明人
KNAPP ROBERT T.
分类号
F04F1/06;G05D16/10
主分类号
F04F1/06
代理机构
代理人
主权项
地址
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