Mathematic teaching rack

Description

FIG. 1 is a front elevational view of the mathematic teaching rack 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;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a frontn perspective view thereof.

The broken lines shown in FIGS. 5 and 7 are for illustrative purposes only and form no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D149083 March 1948 Mooney
D169562 May 1953 Rieck
D184042 December 1958 Dochterman et al.
D300040 February 28, 1989 Dermody
3455034 July 1969 Schott
3811205 May 1974 Pitzler
3995378 December 7, 1976 Darnell
4233757 November 18, 1980 Narcise
4812124 March 14, 1989 Colodner et al.
4884973 December 5, 1989 Pak
5205747 April 27, 1993 Tan
Patent History
Patent number: D373144
Type: Grant
Filed: Jun 6, 1994
Date of Patent: Aug 27, 1996
Inventor: Alice M. Hansen (El Cajon, CA)
Primary Examiner: Susan J. Lucas
Assistant Examiner: Pamela Burgess
Application Number: 0/23,997
Classifications