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发明名称
Weighing scale for the blind
摘要
申请公布号
US2492257(A)
申请公布日期
1949.12.27
申请号
US19460680338
申请日期
1946.06.29
申请人
BARTON GEORGE B
发明人
BARTON GEORGE B.
分类号
G01G23/36
主分类号
G01G23/36
代理机构
代理人
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