Filed: April 3, 2007 [ Vacuum gripper and Vacuum-based suction cup manipulator comprised of suction cups, vacuum controls, pressure regulators… Owned by:COVAL Serial Number:79037800
Filed: April 2, 2009 Electricity powered Venturi effect vacuum generators for creating vacuum suction for industrial use in handling goods Owned by:COVAL Serial Number:79069026
Filed: October 21, 2010 Electricity powered venturi effect vacuum generators for creating suction for industrial use in handling goods Owned by:COVAL Serial Number:79091976
Filed: September 3, 2015 Machines, apparatus and parts thereof for the production of vacuums, namely, vacuum pumps, venturi tubes, suction cups,… Owned by:COVAL Serial Number:79182909