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发明名称
Micrometer depth gauge
摘要
申请公布号
US1817622(A)
申请公布日期
1931.08.04
申请号
US19280272218
申请日期
1928.04.23
申请人
HANSEN PETER N
发明人
HANSEN PETER N.
分类号
G01B3/28
主分类号
G01B3/28
代理机构
代理人
主权项
地址
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