Massachusetts manufacturers are making products to fight the novel coronavirus, save patients caught in its grip, protect doctors and nurses, and arrest the disease’s spread. That might be stuff that’s already in their product line. Pelican Products in South Deerfield makes Pelican Storm Cases for lifesaving ventilators shipped from Oregon to New York City. Sometimes it is a slight deviation from the norm. Universal Plastics in Holyoke is making face shields and acrylic intubation boxes.