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发明名称
Trunk switching circuitry
摘要
申请公布号
US3336442(A)
申请公布日期
1967.08.15
申请号
US19640373696
申请日期
1964.06.09
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
CASTERLINE RUSSELL C.;JR. LEOPOLD F. GOELLER,;NERVIK JOHN M.
分类号
H04Q3/545
主分类号
H04Q3/545
代理机构
代理人
主权项
地址
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