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发明名称
Vernier
摘要
申请公布号
US2993200(A)
申请公布日期
1961.07.18
申请号
US19600030972
申请日期
1960.05.23
申请人
GENERAL PRECISION, INC.
发明人
WALKER RUSSELL;LISS SAUL
分类号
H03M1/00
主分类号
H03M1/00
代理机构
代理人
主权项
地址
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