Patents by Inventor Francis M. Andries

Francis M. Andries has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4991581
    Abstract: An apparatus and method of recording and processing acoustics, such as body sounds, for assessment of the sound and possible diagnosis of any abnormalities associated with the sound. The apparatus includes an electronic stethoscope for acoustic pick-up and a convertor section for converting the acoustic analog signal into a digital signal. The operator can track the acoustic signal on an acoustic headset. The digital signal is continuously stored in computer memory and the operator can selectably retain a portion of the digital signal in volatile memory. The apparatus further includes a signal editing function for selectably altering the retained digital signal to isolate the waveform of interest. To this end, the retained signal is fed through the conversion section for conversion to an output analog signal for display on the monitor and play on the acoustic headset. The retained signal can be further edited as desired and stored in nonvolatile memory.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: February 12, 1991
    Assignee: Andries Tek R&D Limited Partnership
    Inventor: Francis M. Andries
  • Patent number: D262165
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: December 8, 1981
    Inventors: Carol A. Andries, Dennis L. Christiansen, Francis M. Andries