| 发明名称 |
AUXILIARY ATTENUATOR ARRANGEMENT FOR USE IN VOICE-SWITCHED SPEAKERPHONE AND METHOD OF SELECTIVELY INSERTING COMMUNICATION LOSS IN SPEAKERPHONE PATHS |
| 摘要 |
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| 申请公布号 |
CA2055794(A1) |
申请公布日期 |
1992.05.20 |
| 申请号 |
CA19912055794 |
申请日期 |
1991.11.18 |
| 申请人 |
NEC CORPORATION |
发明人 |
KOMODA, MOTOYOSHI;YOSHIDA, IKIO |
| 分类号 |
H04M1/00;H04M1/60;H04M9/10 |
主分类号 |
H04M1/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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