Patents by Inventor H. Curt Hoelfing

H. Curt Hoelfing 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).

  • Meter hose inhaler reservoir
    Patent number: D316902
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: May 14, 1991
    Inventor: H. Curt Hoelfing