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发明名称
Process and apparatus for teaching intended to permit objective hearing of one's own words
摘要
申请公布号
US3358390(A)
申请公布日期
1967.12.19
申请号
US19640403559
申请日期
1964.10.13
申请人
TADEUSZ KORN
发明人
KORN TADEUSZ
分类号
G09B5/04
主分类号
G09B5/04
代理机构
代理人
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