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发明名称
TOUCH-TONE SIGNAL SENDING METHOD FOR PRIVATE BRANCH EXCHANGE
摘要
申请公布号
JPH03295347(A)
申请公布日期
1991.12.26
申请号
JP19900097121
申请日期
1990.04.12
申请人
MATSUSHITA ELECTRIC IND CO LTD
发明人
KATAYAMA TORU
分类号
H04M3/42;H04Q1/45
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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