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Locking safety utility knife
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Patent number 5,890,294
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Issue date Apr 6, 1999
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PSI, Inc.
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Ronald Keklak
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B26 - HAND CUTTING TOOLS CUTTING SEVERING
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Safety utility knife
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Patent number 5,426,855
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Issue date Jun 27, 1995
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PSI, Inc.
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Ronald Keklak
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B26 - HAND CUTTING TOOLS CUTTING SEVERING
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Safety utility knife
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Patent number 5,303,474
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Issue date Apr 19, 1994
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PSI, Inc.
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Ronald Keklak
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B26 - HAND CUTTING TOOLS CUTTING SEVERING
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Safe utility knife
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Patent number 4,713,885
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Issue date Dec 22, 1987
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Ronald Keklak
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B26 - HAND CUTTING TOOLS CUTTING SEVERING
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Trailer creep alarm
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Patent number 4,680,571
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Issue date Jul 14, 1987
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Dedicated Technologies, Inc.
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Ronald Keklak
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B60 - VEHICLES IN GENERAL
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Pocket key holder
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Patent number 4,417,612
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Issue date Nov 29, 1983
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Michael V. Couture
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A45 - HAND OR TRAVELLING ARTICLES