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发明名称
Recording device
摘要
申请公布号
US2020372(A)
申请公布日期
1935.11.12
申请号
US19270237498
申请日期
1927.12.03
申请人
OLSEN THORSTEN Y;TRUST CO PROVIDENT
发明人
OLSEN THORSTEN Y.;CO. PROVIDENT TRUST
分类号
G01M1/08
主分类号
G01M1/08
代理机构
代理人
主权项
地址
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