Test tube rack

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Description

FIG. 1 is a top perspective view of a test tube rack, showing my new design, the bottom perspective view being a mirror image;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side elevational view being a mirror image; and,

FIG. 4 is an end elevational view thereof, the opposite end elevational view being a mirror image.

Referenced Cited
U.S. Patent Documents
D29512 October 1898 Barkley
D241661 September 1976 Shine et al.
D245118 July 19, 1977 Heaton
D257390 October 14, 1980 Hahn et al.
D313651 January 8, 1991 Michelson
D333931 March 16, 1993 Wein
D359126 June 6, 1995 Hovatter
1595437 August 1926 Webster
3258854 July 1966 Ascoli et al.
3638664 February 1972 Cohn
4281768 August 4, 1981 Summers
4661326 April 28, 1987 Schainhulz
5133939 July 28, 1992 Mahe
5424213 June 13, 1995 Mougin
Patent History
Patent number: D392743
Type: Grant
Filed: Oct 31, 1994
Date of Patent: Mar 24, 1998
Inventor: Steven D. Stoufer (Redwood City, CA)
Primary Examiner: Stella Reid
Attorneys: Carol D. Titus, James J. Leary
Application Number: 0/30,501
Classifications
Current U.S. Class: Circular Aperture Or Recess (D24/230)
International Classification: 2401;