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Patents for Herbert H. Lewis
Patents 1 - 3 of 3
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NumberDatePatenteeTitleType
4,934,611Jun. 19, 1990H.H. LewisRotary grinding apparatuswood grinding machines
4,934,614Jun. 19, 1990H.H. LewisRotary grinding apparatus with secondary grinding chamber sectionwood grinding machines
4,946,109Aug. 07, 1990H.H. LewisTooth assembly for rotary grinding apparatuswood grinding machines
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