Patents by Inventor David Janello

David Janello 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).

  • Col legno bow guard
    Patent number: 4742754
    Abstract: This device is designed to be received on a bow of a stringed instrument, for impact with the strings of the instrument. Primarily, it consists of a conical and split sleeve or cylinder that is frictionally received on the rod section of the bow of the instrument.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: May 10, 1988
    Inventor: David Janello