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Cap for lift hole
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Patent number 9,297,175
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Issue date Mar 29, 2016
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ELEMATIC OYJ
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Lassi Jarvinen
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B28 - WORKING CEMENT, CLAY, OR STONE
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3217375
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Patent number 3,217,375
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Issue date Nov 16, 1965
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B28 - WORKING CEMENT, CLAY, OR STONE
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2962839
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Patent number 2,962,839
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Issue date Dec 6, 1960
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E04 - BUILDING
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2635450
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Patent number 2,635,450
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Issue date Apr 21, 1953
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B28 - WORKING CEMENT, CLAY, OR STONE