Machines, namely, ultrasonic equipment using acoustical vibrations to improve the performance of metal working tools

Coating compositions in the nature of paint used for dyeing acoustical tile ceilings

Audio speakers and amplifiers

underwater acoustic intensity probes, underwater acoustic impedance probes, and associated calibration systems, namely, p-u acoustic intensity probes, which are underwater acoustic intensity sensors for measuring acoustic pressure and particle velocity; p-a acoustic intensity probes, which are underwater acoustic intensity sensors for measuring acoustic pressure and particle acceleration; p-u acoustic impedance probes, which are underwater acoustic impedance sensors for measuring acoustic pre...

RACK MOUNTED LOUDSPEAKERS SPECIFICALLAY FOR TELEVISION PRODUCTION STUDIOS, TELEVISION POST PRODUCTION HOUSES, TELEVISION AND RADIO BRAODCAST STUDIOS AND NOT FOR GENERALA RETAIL OR WHOLESALE SALES TO THE PUBLIC

COATING COMPOSITION FOR DYEING ACOUSTICAL TILE CEILINGS

ELECTRICAL, AUDIO, HIGH FIDELITY REPRODUCTION APPARATUS AND PARTS THEREOF-NAMELY, HIGH FIDELITY POWER AMPLIFIERS; HIGH FIDELITY POWER AMPLIFIER KITS; HIGH FIDELITY CONTROL CENTERS; HIGH FIDELITY CONTROL CENTER KITS; HIGH FIDELITY RADIO TUNERS; HIGH FIDELITY RADIO TUNER KITS; HIGH FIDELITY SYSTEMS OF POWER AMPLIFIER, CONTROL CENTER, TUNER AND COMBINATIONS THEREOF; HICH FIDELITY LOUDSPEAKERS, AND ELECTRICAL AND ELECTRONIC COMPONENTS OF THE FOREGOING

STEREO & HI-FI LOUDSPEAKER SYSTEM, AND AUDIO EQUIPMENT ROCKS