Patents by Inventor Ewald Ulmer

Ewald Ulmer 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).

  • Concrete vibrator machine
    Patent number: 4320987
    Abstract: A concrete vibrator machine movable longitudinally of a roadway, or the like, with a vibrator unit movable back and forth transversely of the roadway, with the vibrator mechanism thereof disposed in the concrete to be vibrated, and with the vibrator mechanism being raisable and lowerable relative to the concrete to be vibrated.
    Type: Grant
    Filed: October 29, 1979
    Date of Patent: March 23, 1982
    Assignee: CMI Corporation
    Inventors: Murray A. Rowe, Herbert C. Glesmann, Ewald Ulmer