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经营范围
发明名称
Hydrovacuumatic balance
摘要
申请公布号
US2351398(A)
申请公布日期
1944.06.13
申请号
US19410424761
申请日期
1941.12.29
申请人
DARRELL MARSDEN DOWDING;JOHN CUMMINGS TYLER
发明人
BUCHET CONRAD R.
分类号
F04B47/02
主分类号
F04B47/02
代理机构
代理人
主权项
地址
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