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Signal light assembly
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Patent number 10,151,143
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Issue date Dec 11, 2018
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Lindsay Transportation Solutions, Inc.
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Paul Keck
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B61 - RAILWAYS
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Platform unit
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Patent number 5,967,262
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Issue date Oct 19, 1999
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Krausse-Werk GmbH & Co. KG
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Gunther Krause
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E04 - BUILDING
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Working platform
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Patent number 5,915,497
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Issue date Jun 29, 1999
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Krause-Werk GmbH & Co. KG
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Gunther Krause
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E04 - BUILDING
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Scaffold plank
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Patent number 4,331,218
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Issue date May 25, 1982
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Eberhard Layher
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E04 - BUILDING
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3884328
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Patent number 3,884,328
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Issue date May 20, 1975
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E04 - BUILDING