Number | Name | Date | Kind |
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4445772 | Aoki et al. | May 1984 | |
4647179 | Schmidlin | Mar 1987 | |
4695723 | Minor | Sep 1987 | |
5028779 | Gundlach et al. | Jul 1991 |
Entry |
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Japanese Patent Application No. Hei 1-340663; dated Dec. 28, 1989; Published Sep. 4, 1991; Assigned to Matsushita Denki; Sangyo K.K. |