Patents by Inventor Gustl W. Ruprecht

Gustl W. Ruprecht 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).

  • Pipe cleaning tool
    Patent number: 5283922
    Abstract: A pipe cleaning machine for driving a pipe cleaning coil. The pipe cleaning machine includes a hand lever having a switch which can be used by the operator to both engage the drive and to change the direction of rotation.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: February 8, 1994
    Assignee: Horst K Lunder GmbH
    Inventor: Gustl W. Ruprecht