Acoustic Patents (Class 379/444)
  • Method for causing large numbers of telephones to dial the same telephone numbers
    Patent number: 4847886
    Abstract: The invention relates to a method for causing a plurality of telephone calls to a predetermined telephone number. A broadcast of the audio signal associated with the predetermined telephone number is made so that receivers producing the audible signals associated with the predetermined telephone number can cause telephones to transmit the predetermined telephone number.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: July 11, 1989
    Inventor: Norris J. Chumley
  • Telephone handset/acoustic coupler adapter
    Patent number: 4720858
    Abstract: An adapter is provided for use with acoustic coupler interface devices. The adapter allows a non-standard handset mouthpiece to be used with a mouthpiece muff configured for a standard configuration mouthpiece without extensive modification to either the non-standard handset or the mouthpiece muff.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: January 19, 1988
    Assignee: MSI Data Corporation
    Inventors: Ronald G. Pavelka, Oren J. Chesebro