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发明名称
Toll board
摘要
申请公布号
US2908764(A)
申请公布日期
1959.10.13
申请号
US19560595316
申请日期
1956.07.02
申请人
GENERAL TELEPHONE LABORATORIES, INCORPORATED
发明人
LINDBLOOM WILLIAM A.
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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