Duct close elbow

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Description

FIG. 1 is a top perspective view of a duct close elbow showing our new design;

FIG. 2 is a side elevational view thereof, the opposite side being a mirror image of the side shown;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D31835 November 1899 Kuehn
D33258 September 1900 Kelly
D234463 March 1975 Ahlrot
D335174 April 27, 1993 Anderson et al.
458994 September 1891 Bieber
925762 June 1909 Eager
2086007 July 1937 Tompkins
2131804 October 1938 Holub
2348455 May 1944 Daudelin
2392220 January 1946 Bruhn et al.
2823703 February 1958 Nusser, Jr.
3185506 May 1965 Szlashta
5121948 June 16, 1992 Anderson et al.
5145217 September 8, 1992 Anderson et al.
Patent History
Patent number: D342782
Type: Grant
Filed: Jan 31, 1992
Date of Patent: Dec 28, 1993
Assignee: Builder's Best, Inc. (Jacksonville, TX)
Inventors: Charles B. Anderson (Jacksonville, TX), Charles R. Kenrick (Spring Lake, MI)
Primary Examiner: James R. Largen
Law Firm: Price, Heneveld, Cooper, DeWitt & Litton
Application Number: 7/829,722