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Vital timer
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Patent number 4,472,789
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Issue date Sep 18, 1984
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General Signal Corporation
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Henry C. Sibley
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G07 - CHECKING-DEVICES
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Vital rate decoder
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Patent number 4,307,463
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Issue date Dec 22, 1981
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General Signal Corporation
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Henry C. Sibley
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G08 - SIGNALLING
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Vital electronic code generator
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Patent number 4,234,870
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Issue date Nov 18, 1980
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General Signal Corporation
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Henry C. Sibley
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Vital relay operating circuit
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Patent number 4,118,750
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Issue date Oct 3, 1978
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General Signal Corporation
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John H. Auer
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H01 - BASIC ELECTRIC ELEMENTS
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Fail-safe solid state logic
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Patent number 4,097,764
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Issue date Jun 27, 1978
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General Signal Corporation
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Henry C. Sibley
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Train control signalling system
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Patent number 4,029,274
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Issue date Jun 14, 1977
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General Signal Corporation
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Henry C. Sibley
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G06 - COMPUTING CALCULATING COUNTING
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Shunt enhancement logic circuit
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Patent number 3,958,782
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Issue date May 25, 1976
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General Signal Corporation
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Henry C. Sibley
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H03 - BASIC ELECTRONIC CIRCUITRY
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Four terminal varistor
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Patent number 3,959,763
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Issue date May 25, 1976
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General Signal Corporation
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Henry C. Sibley
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H01 - BASIC ELECTRIC ELEMENTS
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Track circuit
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Patent number 3,951,364
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Issue date Apr 20, 1976
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General Signal Corporation
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Henry C. Sibley
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B61 - RAILWAYS