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发明名称
Duct rodding apparatus
摘要
申请公布号
US1939796(A)
申请公布日期
1933.12.19
申请号
US19320633014
申请日期
1932.09.13
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
SPOWART JOHN B.
分类号
H02G1/08
主分类号
H02G1/08
代理机构
代理人
主权项
地址
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