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发明名称
Comparator device
摘要
申请公布号
US2380567(A)
申请公布日期
1945.07.31
申请号
US19440527526
申请日期
1944.03.22
申请人
FISH-SCHURMAN CORPORATION
发明人
YAWITZ MURRAY;SUWA IGNAZ F.
分类号
G02B21/00
主分类号
G02B21/00
代理机构
代理人
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地址
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