Patents by Inventor Hartmut S. Engel

Hartmut S. Engel 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).

  • Composite lamp assembly with detachable clamping means
    Patent number: 4228487
    Abstract: A composite lamp assembly, especially for outdoor use, including a plurality of lighting fixtures individually supported by composite arms extending at angles other than 90 degrees from a central mast, with a novel ring-shaped clamping assembly detachably joining adjacent connecting sections to form the arms, and the clamping assembly including aligning surfaces ensuring proper rotational positioning of adjacent connecting sections.
    Type: Grant
    Filed: June 7, 1978
    Date of Patent: October 14, 1980
    Assignee: Staff KG
    Inventors: Kurt Hesse, Hartmut S. Engel
  • Desk lamp
    Patent number: D286818
    Type: Grant
    Filed: May 18, 1984
    Date of Patent: November 18, 1986
    Assignee: 501 Brillantleuchten AG
    Inventor: Hartmut S. Engel