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发明名称
Micrometer scale
摘要
申请公布号
US2855684(A)
申请公布日期
1958.10.14
申请号
US19560613169
申请日期
1956.10.01
申请人
WELSTEAD CHARLES H
发明人
WELSTEAD CHARLES H.
分类号
G01B3/20
主分类号
G01B3/20
代理机构
代理人
主权项
地址
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