Patents by Inventor Hans Dolder

Hans Dolder 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).

  • Building blocks and support structure
    Patent number: 4056907
    Abstract: A structure composed of a girder grating as well as building blocks retained by such girder grating. The girder grating consists of trusses and the chords of the trusses engage into grooves provided at the building blocks.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: November 8, 1977
    Assignee: Adelheid Dolder
    Inventor: Hans Dolder