Patents by Inventor Gary L. Grueneberg

Gary L. Grueneberg 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).

  • Noise attenuator
    Patent number: 4109755
    Abstract: High temperature resisting cordage is wrapped around an exhaust gas muffler housing and covered with an outer wrap of metal to provide sound and thermal insulation for the muffler.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: August 29, 1978
    Assignee: Tenneco, Inc.
    Inventor: Gary L. Grueneberg