An InventHelp 123Invent Client Develops New Tool for Cleaning Drilled Holes in Concrete (LOS-689) /PRNewswire/ -- "I work in construction, and I needed a better way to clean drilled holes within concrete," said an inventor from Santa Barbara, California. As ... prnewswire.com prnewswire.com / feeds prnewswire-com-news-releases .. prnewswire-com-financial-services / / #news / / 28 days 28d Share