Patents by Inventor Josef Schoerkmayr

Josef Schoerkmayr 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).

  • Electronic keyboard instrument
    Patent number: 4730533
    Abstract: A keyboard instrument having a plurality of keys which upon actuation each generate a tone correlated to the respective key, and having a plurality of optical display means on each of said keys, said display means indicating the sequence of the keys to be actuated.
    Type: Grant
    Filed: August 28, 1986
    Date of Patent: March 15, 1988
    Inventor: Josef Schoerkmayr