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Universal sign holder
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Patent number 6,003,827
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Issue date Dec 21, 1999
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Traffix Devices, Inc.
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Jack H. Kulp
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Unitary stabilizing base
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Patent number 5,755,528
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Issue date May 26, 1998
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TrafFix Devices
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Jack H. Kulp
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Legless sign stand
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Patent number 5,732,911
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Issue date Mar 31, 1998
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Traffix Devices, Inc.
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Jack H. Kulp
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES