发明名称 |
Magnetically activated electric filter apparatus |
摘要 |
This invention relates generally to electronic filter circuits on POTS (Plain Old Telephone System) lines and more particularly to an electronic filter circuit which contains a magnetically activated switch. The switch enables multiple POTS device micro-filter combinations to be simultaneously active without the drawbacks of the prior art.
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申请公布号 |
US2003043996(A1) |
申请公布日期 |
2003.03.06 |
申请号 |
US20010947270 |
申请日期 |
2001.09.05 |
申请人 |
SEDIO STEPHEN MICHAEL;LAO RICHARD |
发明人 |
SEDIO STEPHEN MICHAEL;LAO RICHARD |
分类号 |
H01F17/04;H03H1/00;H03H7/01;(IPC1-7):H04M1/00;H04M9/00 |
主分类号 |
H01F17/04 |
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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