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发明名称
TRANSMITTER FOR SALES AUDIT AND TABULATING SYSTEMS
摘要
申请公布号
CA311249(A)
申请公布日期
1931.05.12
申请号
CAD311249
申请日期
申请人
THE ASSOCIATED TELEPHONE AND TELEGRAPH COMPANY
发明人
JOSEPH W. BARKHAM;MARTIN L. NELSON
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主分类号
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