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经营范围
发明名称
Improvements in or relating to reciprocating apparatus for producing a vacuum
摘要
申请公布号
GB598264(A)
申请公布日期
1948.02.13
申请号
GB19450017632
申请日期
1945.07.10
申请人
EDWARD DEODATO
发明人
分类号
F04B39/00
主分类号
F04B39/00
代理机构
代理人
主权项
地址
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