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经营范围
发明名称
Process for testing apparatus for leaks
摘要
申请公布号
US2228737(A)
申请公布日期
1941.01.14
申请号
US19380227772
申请日期
1938.08.31
申请人
SERVEL, INC.
发明人
TANDBERG JOHN GUDBRAND;DAMSBERG CARL ERIC ARVID
分类号
G01N31/22
主分类号
G01N31/22
代理机构
代理人
主权项
地址
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