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2013-01-08 |
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Intrinsically safe communications circuit |
Renato Kitchener, Gunther Rogoll |
2012-09-25 |
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Electrical circuit with incendive arc prevention means |
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Bus isolator for industrial control system providing intrinsically safe operation |
Robin Slater, Hermann Wieth, Igor Kurkovskiy, Richard A. Ales, Robert J. Kretschmann |
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Low voltage industrial control system providing intrinsically safe operation |
Robin Slater, Robert J. Kretschmann, Martin Junker, John D. Crabtree |
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Serial data isolator industrial control system providing intrinsically safe operation |
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2000-03-14 |