Patents Assigned to Hermann A. Dreyer
  • Structural insert for providing root-space protection
    Patent number: 5704159
    Abstract: The root-space protection comprises a basic component (1) forming the root space and a cover (9) with a trunk aperture. In order to suit the root-space protection to the biological, technical and aesthetic requirements, the proposal is for a structural insert in which the basic component (1) is subdivided transversely to its vertical axis (2) into at least two parts (3, 4), where the upper part has a recess (5) for the cover.
    Type: Grant
    Filed: July 19, 1995
    Date of Patent: January 6, 1998
    Assignee: Hermann A. Dreyer
    Inventors: Hermann A. Dreyer, Peter Erlacher