Pantent No |
---|
3448703 |
4308409 |
3820892 |
3764874 |
4347192 |
5053913 |
5189002 |
5240776 |
Country | Pantent No |
---|---|
USA | US 6240840 B1 |
US 6619197 B1 | |
US 7040221 B2 | |
US 7024716 B2 | |
Taiwan | I-222933 |
199225 | |
Koera | 0479482 |
10-0556143 | |
Germany | 10000585 |
UK | GB 2346584 B |
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