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发明名称
Vacuum gauge
摘要
申请公布号
US1949627(A)
申请公布日期
1934.03.06
申请号
US19310545383
申请日期
1931.06.19
申请人
PATENT ENGINEERING CORPORATION
发明人
ROCKWELL EDWARD A.
分类号
G01F23/16
主分类号
G01F23/16
代理机构
代理人
主权项
地址
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