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经营范围
发明名称
Artificial larynx
摘要
申请公布号
US1840112(A)
申请公布日期
1932.01.05
申请号
US19270240686
申请日期
1927.12.17
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
LANE CLARENCE E.
分类号
A61F2/20
主分类号
A61F2/20
代理机构
代理人
主权项
地址
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