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发明名称
Device for testing crystals
摘要
申请公布号
US2375260(A)
申请公布日期
1945.05.08
申请号
US19430495041
申请日期
1943.07.16
申请人
FEDERAL TELEPHONE AND RADIO CORPORATION
发明人
SUYDAM CLINTON H.
分类号
G01N21/88
主分类号
G01N21/88
代理机构
代理人
主权项
地址
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