ALEXANDRIA, Virginia, May 30 -- BEEHEX AUTOMATION, INC., Columbus, Ohio has been assigned a patent (No. US 11660811 B1, initially filed Aug. 9, 2019) developed by Anjan Contractor, Lewis Center, Ohio, and Benjamin Feltner, Blacklick, Ohio, for "3D-printer system having a pneumatic system for preventing drippage of excess print material." . . .