Patents by Inventor Robert Gatzan

Robert Gatzan 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).

  • Hold down clamp
    Patent number: 6992244
    Abstract: A base drum rim clamp device comprising in combination, a base, a wedging device to exert clamping force that device carried by the base, means to displace said device to move a surface or surfaces of the device relatively toward one side of a base drum rim, and a clamp part to which clamping force is transmitted at the opposite side of the drum rim.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: January 31, 2006
    Assignee: Drum Workshop, Inc.
    Inventors: Michael Paul, Robert Gatzan
  • Hold down clamp
    Publication number: 20050150354
    Abstract: A base drum rim clamp device comprising in combination, a base, a wedging device to exert clamping force that device carried by the base, means to displace said device to move a surface or surfaces of the device relatively toward one side of a base drum rim, and a clamp part to which clamping force is transmitted at the opposite side of the drum rim.
    Type: Application
    Filed: January 13, 2004
    Publication date: July 14, 2005
    Inventors: Michael Paul, Robert Gatzan