Patents by Inventor Avraham Galper

Avraham Galper 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).

  • Speaker vent
    Patent number: 5241890
    Abstract: In a woodwind instrument, the improvement comprising a speaker vent extending from inside to outside of the instrument, said speaker vent being characterized by an internal volume in the range of 200 mm.sup.3 to 285 mm.sup.3.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: September 7, 1993
    Inventor: Avraham Galper