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Diagnostic system
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Patent number 4,729,124
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Issue date Mar 1, 1988
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Concurrent Computer Corporation
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Allen Hansel
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G06 - COMPUTING CALCULATING COUNTING
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Power supply with battery backup
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Patent number 4,694,194
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Issue date Sep 15, 1987
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Concurrent Computer Corporation
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Allen Hansel
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Fiber optic data link
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Patent number 4,388,732
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Issue date Jun 14, 1983
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The Perkin-Elmer Corporation
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Allen B. Hansel
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Current sharing modular power system
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Patent number 4,276,590
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Issue date Jun 30, 1981
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The Perkin-Elmer Corporation
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Allen B. Hansel
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER