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Optical switch
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Patent number 4,830,444
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Issue date May 16, 1989
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American Telephone and Telegraph Company, AT&T Bell Laboratories
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Thomas J. Cloonan
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Optical logic arrangement
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Patent number 4,764,890
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Issue date Aug 16, 1988
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American Telephone and Telegraph Company, AT&T Bell Laboratories
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Harvard S. Hinton
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G02 - OPTICS
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Optical interconnection arrangement
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Patent number 4,705,344
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Issue date Nov 10, 1987
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American Telephone and Telegraph Company, AT&T Bell Laboratories
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Harvard S. Hinton
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G02 - OPTICS
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