Patents by Inventor Friedrich Lorenz

Friedrich Lorenz 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).

  • Manual agricultural implement
    Patent number: 4905768
    Abstract: A manual agricultural implement, having a shaft with an axis and two ends, a handle arranged at one of the ends of the shaft and a tool arranged at the other end of the shaft having a plurality of tines arranged at radial distances from the shaft, the tines extending around the shaft axis in a curved manner and along the surface of an imaginary cylinder which is coaxial to the shaft axis.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: March 6, 1990
    Inventor: Friedrich Lorenz