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6125501 | Yip | Oct 2000 | A |
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Number | Date | Country |
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2087056 | Jul 1994 | CA |
G 79 29 844.5 | Mar 1981 | DE |
G 90 10 066.2 | Oct 1991 | DE |
G 91 14 371.3 | Apr 1992 | DE |
853917 | Jul 1998 | EP |
2603181 | Jun 1987 | FR |
2291790 | Jul 1994 | GB |
4364822 | Dec 1992 | JP |
510283 | Oct 1998 | SE |