AUDIMETER

APPARATUS FOR INDICATING OR RECORDING INFORMATION PERTINENT TO THE LISTENING OR VIEWING HABITS OF WAVE SIGNAL RECEIVER USERS SUCH AS MECHANICAL, ELECTROMECHANICAL OR ELECTRONIC INSTRUMENTS FOR INDICATING, OR RECORDING WITH RESPECT TO TIME, THE TRANSMITTING STATIONS TO WHICH RADIO RECEIVERS OR TELEVISION RECEIVERS ARE TUNED FROM MINUTE TO MINUTE, HOUR TO HOUR, AND DAY TO DAY