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Method for joining thermoplastic parts
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Patent number 4,997,500
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Issue date Mar 5, 1991
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AT&T Bell Laboratories
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Jaime R. Arnett
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Spring contact structure
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Patent number 4,688,875
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Issue date Aug 25, 1987
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American Telephone and Telegraph Company
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Robert J. O'Connor
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H01 - BASIC ELECTRIC ELEMENTS
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Wire stripping tool
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Patent number 4,451,948
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Issue date Jun 5, 1984
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Bell Telephone Laboratories, Incorporated
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Robert R. Goodrich
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Modular jack converter
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Patent number 4,188,505
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Issue date Feb 12, 1980
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Bell Telephone Laboratories, Incorporated
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Robert J. O'Connor
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H01 - BASIC ELECTRIC ELEMENTS