Test tube rack

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Description

FIG. 1 is a plan view of an unassembled test tube rack shown flat, showing my new design;

FIG. 2 is a perspective view of the tube rack shown in condition of use at the first step of assembly;

FIG. 3 is a perspective view of the tube rack shown in condition of use at the second step of assembly;

FIG. 4 is a perspective view of the tube rack shown in condition of use with the test tube rack shown fully assembled; and,

FIG. 5 is an enlarged view of a portion of FIG. 1 showing portions of the lettering and numbering in greater detail.

Claims

The ornamental design for a test tube rack, as shown and described.

Referenced Cited
U.S. Patent Documents
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5048957 September 17, 1991 Berthold et al.
5169603 December 8, 1992 Landsberger
5632388 May 27, 1997 Morrison et al.
D414271 September 21, 1999 Mendoza
D448854 October 2, 2001 Kuiper et al.
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D466219 November 26, 2002 Wynschenk et al.
6568544 May 27, 2003 Lafond et al.
D529622 October 3, 2006 Hadjis et al.
D533948 December 19, 2006 Schaub et al.
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Patent History
Patent number: D638138
Type: Grant
Filed: Nov 23, 2010
Date of Patent: May 17, 2011
Assignee: Evergreen Industries, Inc. (Los Angeles, CA)
Inventor: Johnson N. S. Wong (Rolling Hills, CA)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Mark Cavanna
Attorney: Berliner & Associates
Application Number: 29/379,720
Classifications
Current U.S. Class: Tray, Rack Or Vessel Holder (66) (D24/227)