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发明名称
Valve for step-by-step servomotors
摘要
申请公布号
US2439515(A)
申请公布日期
1948.04.13
申请号
US19460645818
申请日期
1946.02.06
申请人
HAROLD HODGSON RICHARD
发明人
HODGSON RICHARD HAROLD
分类号
B63H21/22;F15B11/12;F16K11/085
主分类号
B63H21/22
代理机构
代理人
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地址
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