Patents by Inventor Johan E. Abrahamsen

Johan E. Abrahamsen 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).

  • Oscillating lawn spray with variable width and length
    Patent number: 4245786
    Abstract: A lawn sprinkler having a perforated spray hose that is selectively flexed into a desired curvature and secured fixedly in the desired curvature in order to produce a variable water spray pattern, the device including, in one design, an adjustable jack mounted on rotatable adapters at the hose ends.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: January 20, 1981
    Inventors: Johan E. Abrahamsen, George Spector