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Key-ring
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Patent number D309525
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Issue date Jul 31, 1990
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S. T. Dupont
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Claude Grossiord
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D03 - Travel goods and personal belongings
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Key-ring
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Patent number D304976
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Issue date Dec 12, 1989
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S. T. Dupont
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Claude Grossiord
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D03 - Travel goods and personal belongings
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Key-ring
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Patent number D303997
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Issue date Oct 17, 1989
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S. T. Dupont
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Claude Grossiord
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D03 - Travel goods and personal belongings
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-
-
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Ball point pen
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Patent number D297022
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Issue date Aug 2, 1988
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S. T. Dupont
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Claude Grossiord
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D19 - Office supplies
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Ball point pen
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Patent number D297020
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Issue date Aug 2, 1988
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S. T. Dupont
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Claude Grossiord
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D19 - Office supplies
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Fountain pen
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Patent number D297021
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Issue date Aug 2, 1988
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S. T. Dupont
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Claude Grossiord
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D19 - Office supplies
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Ball point pen
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Patent number D295985
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Issue date May 31, 1988
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S. T. Dupont
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Claude Grossiord
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D19 - Office supplies
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-
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Liquefied gas apparatus
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Patent number 4,177,646
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Issue date Dec 11, 1979
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S. T. Dupont
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Laurent J. Guadagnin
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F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS