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发明名称
Phonographic apparatus
摘要
申请公布号
US2452133(A)
申请公布日期
1948.10.26
申请号
US19420458777
申请日期
1942.09.18
申请人
DICTAPHONE CORPORATION
发明人
LEITNER RICHARD G.;RIEBER WILLIAM K.
分类号
G11B3/08;G11B19/02
主分类号
G11B3/08
代理机构
代理人
主权项
地址
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