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Acoustic coupler assembly
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Patent number 4,149,033
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Issue date Apr 10, 1979
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Graphic Sciences, Inc.
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Matthew J. Costello
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Facsimile machine
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Patent number 4,148,076
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Issue date Apr 3, 1979
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Graphic Sciences, Inc.
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Matthew J. Costello
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Facsimile transceiver
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Patent number 4,005,257
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Issue date Jan 25, 1977
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Graphic Sciences, Inc.
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Robert E. Krallinger
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Optical scanner
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Patent number 3,992,623
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Issue date Nov 16, 1976
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Graphic Sciences, Inc.
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Richard W. Rhyins
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G06 - COMPUTING CALCULATING COUNTING
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