Math teaching aid

-
Skip to: Description  ·  Claims  ·  References Cited  · Patent History  ·  Patent History
Description

The sole FIGURE is a front view of my new child math design.

The design is the combination of a hand print (plus) a numerical number.

Claims

The ornamental design for math teaching aid, as shown and described.

Referenced Cited
U.S. Patent Documents
D48052 October 1915 Wilson
1490858 April 1924 Seegers
D105842 August 1937 Coffey
D443176 June 5, 2001 Strandberg
7416094 August 26, 2008 Sokola, Sr.
Patent History
Patent number: D621877
Type: Grant
Filed: Mar 17, 2008
Date of Patent: Aug 17, 2010
Assignee: (Richmond Twp., MI)
Inventor: Michael Dean Williams (Richmond Township, MI)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Michael A Pratt
Application Number: 29/301,784
Classifications
Current U.S. Class: Teaching Material (D19/59)