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发明名称
Interpolating system
摘要
申请公布号
US1832308(A)
申请公布日期
1931.11.17
申请号
US19280329439
申请日期
1928.12.31
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
KNOOP WILLIAM A.
分类号
主分类号
代理机构
代理人
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