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发明名称
Electric valve control
摘要
申请公布号
US1855415(A)
申请公布日期
1932.04.26
申请号
US19310522590
申请日期
1931.03.14
申请人
PERSONS LAWRENCE M
发明人
PERSONS LAWRENCE M.
分类号
F16K35/16
主分类号
F16K35/16
代理机构
代理人
主权项
地址
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