发明名称 |
Handy multi-frequency audible tone generator for PIN numbers, stores sequence of tones in memory, which is invariable |
摘要 |
The sequence of tones stored in the memory of the multi-frequency tone generator (1) is invariable.
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申请公布号 |
DE10019703(A1) |
申请公布日期 |
2001.10.25 |
申请号 |
DE20001019703 |
申请日期 |
2000.04.20 |
申请人 |
ATRADE E.K. |
发明人 |
ANVAR, SEYED |
分类号 |
G08B3/10;H04M1/275;(IPC1-7):H04M1/50;H04Q1/45 |
主分类号 |
G08B3/10 |
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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