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发明名称
Conveyer stop announcing system
摘要
申请公布号
US1948077(A)
申请公布日期
1934.02.20
申请号
US19320598920
申请日期
1932.03.15
申请人
COLUMBIA PHONOGRAPH COMPANY, INC.
发明人
PRESCOTT JOHN O.;FRANCK ERNEST W.
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