Several Chippewa Valley businesses — some for decades and others just recently — have been fighting fires with their ingenuity. Fires have been doused by water churned out by Chippewa Falls-made pumps for 85 years. An Eau Claire manufacturing company is selling a fire extinguisher it sees as revolutionary. It was among the products tested at a specialized facility run by Chippewa Valley Technical College that hopes to become a go-to place for companies looking for a space to do their research and development.