Patents by Inventor Peter C. Watterman

Peter C. Watterman 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).

  • Method and apparatus for piano tuning and tempering
    Patent number: 4253374
    Abstract: The invention comprises a method and apparatus for the tuning of a piano and other similar musical instruments to equal temperament. A transducer is operative to receive two notes being struck, one of which is tuned and the other of which is to be tuned. The electrical output signal provided by the transducer is processed by bandpass filtering to isolate a predetermined beat note which is associated with the two notes being struck. The filter output signal is applied to an output transducer such as headphones which provides an audible rendition of essentially only the intended beat note.
    Type: Grant
    Filed: December 7, 1978
    Date of Patent: March 3, 1981
    Inventor: Peter C. Watterman