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| US4122316 | 12 janv. 1977 | 24 oct. 1978 | Alps Electric Co., Ltd. | Push button switch assembly having independent operator interlock in at least two rows latching at least one operator | | US4297540 | 1 juin 1978 | 27 oct. 1981 | Alps Electric Co., Ltd. | Interlocking gang push-button switch | | US4309579 | 14 avr. 1980 | 5 janv. 1982 | Alps Electric Co., Ltd. | Ganged push-button switch | | US4445009 | 20 oct. 1981 | 24 avr. 1984 | Kabushiki Kaisha Tokai Rika Denki Seisakusho | Step switch | | US4520241 | 23 févr. 1984 | 28 mai 1985 | Essex Group, Inc. | Multiple push button switch with latch members | | US4668844 | 31 oct. 1985 | 26 mai 1987 | Alps Electric Co., Ltd. | Switch device with pivoted interlock plate |
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