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发明名称
Record mechanism
摘要
申请公布号
US2551198(A)
申请公布日期
1951.05.01
申请号
US19470736603
申请日期
1947.03.22
申请人
EDWARD L. BARRETT;ANN K. BARRETT
发明人
BARRETT EDWARD L.
分类号
G01D15/12;G11B23/06
主分类号
G01D15/12
代理机构
代理人
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