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发明名称
Gauge equipment
摘要
申请公布号
US2218418(A)
申请公布日期
1940.10.15
申请号
US19380238244
申请日期
1938.11.01
申请人
CAIN JOHN C;DENT HAROLD F
发明人
CAIN JOHN C.;DENT HAROLD F.
分类号
E04G21/18;G01B3/00
主分类号
E04G21/18
代理机构
代理人
主权项
地址
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