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发明名称
Mechanical extensor
摘要
申请公布号
US2382596(A)
申请公布日期
1945.08.14
申请号
US19430495857
申请日期
1943.07.23
申请人
TELETYPE CORPORATION
发明人
ZENNER WALTER J.
分类号
H04L5/24
主分类号
H04L5/24
代理机构
代理人
主权项
地址
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