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Single sided DSX frame
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Patent number 4,811,169
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Issue date Mar 7, 1989
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Porta Systems Corp.
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Paul V. De Luca
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Digital system connect frame
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Patent number 4,737,985
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Issue date Apr 12, 1988
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Porta Systems Corp.
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Paul V. De Luca
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Digital system connect frame
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Patent number 4,649,236
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Issue date Mar 10, 1987
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Porta Systems Corp.
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Paul V. De Luca
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Demarcation telephone protector block
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Patent number D276426
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Issue date Nov 20, 1984
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Porta Systems Corp.
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Paul V. Deluca
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D13 - Equipment for production, distribution, or transformation of energy
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