Patents Status A 3D printing device having a wiper-type powder supplier Apparatus and method for integrated processing of modeling files for 3D printers Dual nozzle 3d printing apparatus removably coupled to CNC machine tool 3-dimensional printer having variable laser irradiation device 3-dimensional printer having heating device 3-dimensional printer having binder jet 3D printing apparatus using rotating roller inside powder supplyng hopper 3D printing powder recovery apparatus using air compressor and air pressure 3D laser printing apparatus having powder supplying method using wiper and roller structure Laser high-power converter using superposition of multiple lasers Lens machining machine Vacuum injection 3D printer for forming heat dissipation parts Liquid ink and solid filament integrated injection control and 3D printing equipment