Air duct boot

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Description

FIG. 1 is a front elevational view of an air duct boot showing my new design.

FIG. 2 is a rear elevational view thereof.

FIG. 3 is a left side elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG, 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
24660 July 1859 Potts
D314820 February 19, 1991 Sullivan
D341655 November 23, 1993 Inda et al.
D411901 July 6, 1999 Gomulinski
567231 September 1896 Glauber
925762 June 1909 Eager
2086007 July 1937 Tompkins
2215318 September 1940 Bristol
2297179 September 1942 Walker
2335906 December 1943 Blinn
2348148 May 1944 Rankin
3220079 November 1965 Aggson
3677517 July 1972 Root et al.
4261598 April 14, 1981 Cornwall
4499332 February 12, 1985 Shea et al.
4619471 October 28, 1986 Harbeke
4623170 November 18, 1986 Cornwall
4773197 September 27, 1988 Sullivan
4781401 November 1, 1988 Sharp
5240288 August 31, 1993 Inda et al.
5542223 August 6, 1996 Inda et al.
5675908 October 14, 1997 Barnes
Foreign Patent Documents
315943 May 1989 EPX
1330148 May 1963 FRX
Other references
  • Exhibit A--Photograph of prior air duct riser. Exhibit B--Photograph of prior art duct riser. Sales information from Northern Pipe Products and GPK Products, Inc. (Undated but believed to be prior art to the present application).
Patent History
Patent number: D423660
Type: Grant
Filed: Mar 22, 1999
Date of Patent: Apr 25, 2000
Inventor: John P. Inda (Shawnee, OK)
Primary Examiner: Mitchell Siegel
Law Firm: McAfee & Taft
Application Number: 0/102,230
Classifications
Current U.S. Class: Vent, Ductwork, Or Element Thereof (D23/393)
International Classification: 2399;