ALEXANDRIA, Va., Dec. 8 -- The following federal patents were awarded to inventors in Montana. *** Methods and Systems for Quality Inference and Control for Additive Manufacturing Processes ALEXANDRIA, Virginia, Dec. 7 -- SIGMA LABS, INC., Santa Fe, New Mexico has been assigned a patent (No. US 11517984 B2, initially filed Nov. 6, 2018) developed by five inventors Lars Jacquemetton, Santa Fe, New Mexico; Vivek R. Dave, Concord, New Hampshire; Mark J. Cola, Santa Fe, New Mexico; Glenn Wikle, S  more