Patents by Inventor Erwin L. Oehlerking

Erwin L. Oehlerking 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 float and accessory therefor
    Patent number: 3936210
    Abstract: A concrete finishing tool has a detachable accessory secured to float member of the tool, the accessory including an elongated concrete member extending in the direction of movement of the float member, and structure is employed for securing the elongated member at opposed edges of the float member.
    Type: Grant
    Filed: November 13, 1974
    Date of Patent: February 3, 1976
    Inventor: Erwin L. Oehlerking