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Pushbutton keyboard assembly
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Patent number 4,734,679
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Issue date Mar 29, 1988
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Northern Telecom Limited
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Steven W. Haskins
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Telephone set base
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Patent number 4,491,696
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Issue date Jan 1, 1985
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Northern Telecom Limited
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Steve W. Haskins
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Pivotal switch operating mechanism
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Patent number 4,424,420
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Issue date Jan 3, 1984
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International Telephone & Telegraph Corporation
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Steve W. Haskins
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Modular switch
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Patent number 4,359,611
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Issue date Nov 16, 1982
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Northern Telecom, Inc.
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Steve W. Haskins
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H01 - BASIC ELECTRIC ELEMENTS
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Enclosed modular switch
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Patent number 4,319,107
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Issue date Mar 9, 1982
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Northern Telecom, Inc.
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Steve W. Haskins
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H01 - BASIC ELECTRIC ELEMENTS
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Modular telephone connector
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Patent number 4,286,835
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Issue date Sep 1, 1981
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Northern Telecom Inc.
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William J. Adams
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H01 - BASIC ELECTRIC ELEMENTS
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