Air powered tools, namely, drills, screwdrivers, rivet hammers, saws; Electric coffee grinders; Electric milk frothers; Mixing machines; Paint sprayers; Portable electric power generators; Power-driven cleaning device for industrial air pollution control equipment, namely, a device that produces high intensity impulse waves that loosen collected or impacted dust and debris without damaging the equipment; Power-operated screwdrivers; Power-operated tools, namely, drill hammers; Power-operated ...