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发明名称
Code selective device
摘要
申请公布号
US2487678(A)
申请公布日期
1949.11.08
申请号
US19450620551
申请日期
1945.10.05
申请人
STICKEL HAROLD A
发明人
STICKEL HAROLD A.
分类号
H04M19/04
主分类号
H04M19/04
代理机构
代理人
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地址
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