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Telephone answering instrument
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Patent number D296688
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Issue date Jul 12, 1988
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GTE Communication Systems
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John Maliskas
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D14 - Recording, communication, or information retrieval equipment
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Interrupt synchronizing circuit
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Patent number 4,703,452
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Issue date Oct 27, 1987
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GTE Communication Systems Corporation
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Robert J. Abrant
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G06 - COMPUTING CALCULATING COUNTING
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Wire formed cable brackets
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Patent number 4,690,356
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Issue date Sep 1, 1987
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GTE Communication Systems Corporation
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James V. Koppensteiner
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Housing for a desk telephone base
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Patent number D290461
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Issue date Jun 23, 1987
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GTE Communication Systems, Inc.
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Michael Mitchell
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D14 - Recording, communication, or information retrieval equipment
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Telephone line monitor amplifier
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Patent number 4,672,664
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Issue date Jun 9, 1987
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GTE Communication Systems, Inc.
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Eduard F. B. Boeckmann
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Wall telephone base
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Patent number D288563
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Issue date Mar 3, 1987
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GTE Communication Systems Corporation
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William R. Story
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D14 - Recording, communication, or information retrieval equipment
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Beam lead bonding apparatus
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Patent number 4,638,937
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Issue date Jan 27, 1987
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GTE Communication Systems Corporation
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Thomas D. Belanger
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Venting cap for apparatus housing
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Patent number 4,609,126
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Issue date Sep 2, 1986
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GTE Communications Systems Corporation
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George M. Janda
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Printed wiring board connector
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Patent number 4,602,317
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Issue date Jul 22, 1986
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GTE Communication Systems Corporation
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Richard M. Rovnyak
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H01 - BASIC ELECTRIC ELEMENTS
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