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发明名称
Improvements in and relating to apparatus for treating materials under reduced pressure
摘要
申请公布号
GB477513(A)
申请公布日期
1937.12.31
申请号
GB19370018207
申请日期
1937.06.30
申请人
GEORG MARS
发明人
分类号
B22D18/06
主分类号
B22D18/06
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