Patents by Inventor Armin Tiefengraber

Armin Tiefengraber 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).

  • Indicator apparatus for the recovery of skiers buried by avalanches
    Patent number: 5172110
    Abstract: Indicator apparatus used for recovery of skiers buried by avalanches, includes cooperating transmitters and receivers carried by skiers and by search and rescue personnel. The indicator device carried by a skier is actively powered and is combined to form a single unit with a ski pass.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: December 15, 1992
    Inventor: Armin Tiefengraber