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| O’Hagin’s vents are manufactured and protected under one or more of the following patents: D456,531, D457,234, D458,391, D458,392, D469,889, D479,885, D504,172, D512,774, D549,316, 6,050,039, 6,129,628, 6,354,051, 6,390,914, 6,447,390, 6,491,579, 7,101,279. Other U.S. and foreign patents are pending. |
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