Patents by Inventor Hugo Dellenberg

Hugo Dellenberg 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).

  • Patent number: 4036308
    Abstract: In the process and apparatus for removing the drillings from the drilling te of a drill described, removal is effected through a conduit, extending along the axis of a drill and possibly an adapter for a drilling machine, by a vacuum provided by a compressed-air stream traversing the removal conduit, said compressed air also serving to blow the drillings sucked into the conduit out of the conduit and away from the drilling site.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: July 19, 1977
    Assignee: Gebruder Heller Verwaltungsgesellschaft mit beschrankter Haftung
    Inventor: Hugo Dellenberg