Assignee

NIHON PROJECT CO LTD

JP·1 granted patent·7 citations·filing 2007–2007

Technology mixB23B1 B28D1 F16B1 Y10T1

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0164US7686105B2Drill, wall protector and drilling methodNIHON PROJECT CO LTD·Filed 2007·Granted Mar 30, 2010·7 cites·6 claims

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