1
Victor L Hu, Larry W Mauldin, John J Lee: Auditory-evoked-action-potential-measuring system. Minnesota Mining and Manufacturing Company, Thomas E Schatzel, December 31, 1985: US04561449 (10 worldwide citation)

An auditory-evoked-action-potential-measuring system for measuring the hearing acuity of a subject, the system employing generators for permitting automatic system functionality testing and skin-electrode-contact impedance testing and a switching unit permitting the system to automatically select fo ...


2
Victor L Hu: Tone-pip-signal generator. Minnesota Mining and Manufacturing Company, Donald M Sell, James A Smith, William D Bauer, July 29, 1986: US04603324 (6 worldwide citation)

A tone-pip signal generator for use in systems employed in the identification and diagnosis of hearing defects, the generator including a counter for counting cycles of a clock signal which occur following the time marked by a reset signal, a gate circuit for coupling the clock signal to the counter ...