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发明名称
Measuring instrument
摘要
申请公布号
US1972578(A)
申请公布日期
1934.09.04
申请号
US19320619632
申请日期
1932.06.28
申请人
ADOLF WALLICHS;HERWART OPITZ
发明人
WALLICHS ADOLF;OPITZ HERWART
分类号
G01L1/20;H04R21/02
主分类号
G01L1/20
代理机构
代理人
主权项
地址
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