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发明名称
Apparatus for treating materials under reduced pressure
摘要
申请公布号
US2193034(A)
申请公布日期
1940.03.12
申请号
US19370140727
申请日期
1937.05.04
申请人
GEORG MARS
发明人
MARS GEORG
分类号
B22D18/06
主分类号
B22D18/06
代理机构
代理人
主权项
地址
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