Portable holding tank

- Thetford Corporation
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Description

FIG. 1 is a front perspective view of a portable holding tank showing our new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear side view thereof.

FIG. 4 is a right view thereof.

FIG. 5 is a left side view thereof.

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top view thereof.

It will be understood that the broken lines shown throughout the drawings are for illustrative purposes only and form no part of the present invention.

Claims

The ornamental design for a portable holding tank, as shown and described.

Referenced Cited
U.S. Patent Documents
4145773 March 27, 1979 Sargent et al.
D251674 April 24, 1979 Sayward
4776631 October 11, 1988 Sargent et al.
4805660 February 21, 1989 Antos et al.
4908885 March 20, 1990 Antos
4944048 July 31, 1990 Sargent et al.
5031249 July 16, 1991 Sargent
D356851 March 28, 1995 Holmstadt et al.
D430919 September 12, 2000 Claussen
6189161 February 20, 2001 Rijn et al.
Patent History
Patent number: D490138
Type: Grant
Filed: Jan 14, 2003
Date of Patent: May 18, 2004
Assignee: Thetford Corporation (Ann Arbor, MI)
Inventor: Michael B. Fritz (Dexter, MI)
Primary Examiner: Robin V. Taylor
Attorney, Agent or Law Firm: Harness, Dickey & Pierce, P.L.C.
Application Number: 29/174,220
Classifications
Current U.S. Class: Storage Tank (D23/202)
International Classification: 2301;