Patents by Inventor Adolf Hetzer

Adolf Hetzer 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).

  • Ski with weight attachment
    Patent number: 4154457
    Abstract: A ski having extra weights stationarily disposed adjacent the longitudinal ends thereof and being interchangeably and detachably fixed in their respective positions. A base plate is secured to the ski, the extra weight set thereon, and a covering weight head is secured over the extra weight to the base plate through an anchoring bolt.
    Type: Grant
    Filed: April 5, 1977
    Date of Patent: May 15, 1979
    Assignee: Fritzmeier AG
    Inventors: Peter Auer, Adolf Hetzer