apparel, transportation, printing and office machinery, building units and construction elements, endless belt power transmission systems or components, ventilation, foundation garments, fabric, education and demonstration, heating, combustion, material or article handling, book binding, optical communications, electricity motor control systems, telephone communications, agitating, communications, land vehicles dumping, handling: hand and hoist line implements, pipe joints or couplings, land vehicles, heating systems, selective cutting, envelopes, wrappers and paper board boxes, traversing hoists, electric heating, supporting racks, conveyors: power driven, electricity: transmission to vehicles, brakes, elevator, industrial life truck, stationary lift for vehicle, motor vehicles, motors: spring, weight or animal powered, earth working, wood working, wire working, toilet, tent, canopy, umbrella or cane, stone working, sewing, printing, presses, motors: expansible chamber type, textiles: braiding, netting, and lace making, locks, cutting, turning, package making, excavating, movable and removable closures, card, picture and sign exhibiting