Filed July 19, 2016

Serial No. 87108399

Registered Feb. 21, 2017

Registration No. 5,146,609

Class [Laboratory equipment, namely, force tables for use in laboratories to determine the vector sum of different forces; ] torque tables for use in analyzing problems of torque and center of gravity; [equilibrium cranes for use in illustrating that static equilibrium is achieved when both the forces and the moments are in equilibrium; mass hangers for hanging laboratory weights; ] [ air track substitutions, consisting of perforated triangular rails eimitting air for use in studying frictionless linear motion; ] [ air tables consisting of a mechanism of air levitated discs on a precisely flat table for studying motion in two dimensions; free fall devices, namely, laboratory test equipment to study the effect of gravity on a freely falling object; ] [ inertia wheels used in a laboratory to demonstrate the principles of angular acceleration under a constant torque and determine the effect of friction; ] [ harmonic oscillators; ] [ pendulum sets consisting of electronic sensors for sensing pendulums and pendulums sold as a unit; ] centripal force devices, namely, apparatus for the study and measurement of centripetal force, all used as laboratory equipment in an educational setting; 021; 023; 026; 036; 038

Case Type Trademark