| 发明名称 |
METHOD OF PROTECTING A TELEPHONE LINE AGAINST POSSIBLITY TO INITIATE FROM TELEPHONE SETS CONNECTED THERETO CONNECTIONS BETWEEN SUBSCRIBER'S PABX CONNECTED TO SUCH LINE AND ASSOCIATED PUBLIC TELEPHONE EXCHANGE AND APPARATUS THEREFOR |
| 摘要 |
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| 申请公布号 |
PL318708(A1) |
申请公布日期 |
1998.08.31 |
| 申请号 |
PL19970318708 |
申请日期 |
1997.02.26 |
| 申请人 |
WICHA RADOSLAW;GOLDA JANUSZ |
发明人 |
WICHA RADOSLAW;GOLDA JANUSZ |
| 分类号 |
H04M1/66;(IPC1-7):H04M1/66 |
主分类号 |
H04M1/66 |
| 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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