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经营范围
发明名称
DICTATION MACHINE
摘要
申请公布号
CA324424(A)
申请公布日期
1932.07.26
申请号
CAD324424
申请日期
申请人
THEODORE H. BEARD;JOHN RENHOLT;MANFRED J. JOHNSON
发明人
THEODORE H. BEARD;MANFRED J. JOHNSON;JOHN RENHOLT
分类号
主分类号
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