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经营范围
发明名称
Correction, comment, and finish marking system for dictation machines
摘要
申请公布号
US2306614(A)
申请公布日期
1942.12.29
申请号
US19400359185
申请日期
1940.10.01
申请人
THE GRAY MANUFACTURING COMPANY
发明人
CLAUSEN HENRY P.
分类号
G11B25/04
主分类号
G11B25/04
代理机构
代理人
主权项
地址
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