Patents Assigned to John S. Lewis
  • Patent number: 4297677
    Abstract: A personally worn or portable annunciator device for alerting, warning, training, communicating or diagnostic use for people especially those with hearing impairments. This device which can be activated locally or remotely has as one of its means of generating a tactile sensation a transducer or buzzer, as well as a visual light both of which are activated automatically upon the detection of an audio signal substantially above the local ambient noise, or by a RF signal remotely generated by an auxiliary unit.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: October 27, 1981
    Assignees: John S. Lewis, Edmund P. DiGiannatonio
    Inventors: John S. Lewis, Edmond P. DiGiannantonio, Howard R. Boyle