Lighting unit

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FIGS. 1 and 2 are perspective views from opposite sides of a lighting unit showing my new design;

FIGS. 3 and 4 are opposite side views of the lighting unit of FIGS. 1 and 2; and,

FIG. 5 is a fragmentary bottom view of the lighting unit of FIGS. 1 and 2, with one of the panels being shown broken away for illustrative purposes only.


The ornamental design for a lighting unit, as shown and described.

Referenced Cited
U.S. Patent Documents
D121590 July 1940 Heath
D123757 December 1940 Dreyfuss
D128961 August 1941 Hrabak
D194063 November 1962 Whitley
D292322 October 13, 1987 Krol
D330268 October 13, 1992 Jaksich
Other references
  • Architectural Record, Aug. 1963, p. 66, “Troffer” fixture in center right of page.□□“Fluorescent Lamp Catalogs”.
  • Miller Lighting Catalog 1964/1965, p. 10, “Permilux Dropped Dish Diffuser” in lower half of photo. “Fluorescent Lamp Catalogs”.
Patent History
Patent number: D514731
Type: Grant
Filed: Jun 30, 2004
Date of Patent: Feb 7, 2006
Assignee: (Ludwigsburg)
Inventor: Hartmut S. Engel (D-71634 Ludwigsburg)
Primary Examiner: Clare E Heflin
Attorney: Townsend and Townsend and Crew LLP
Application Number: 29/208,673