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Patent
   D621877
Priority
Mar 17 2008
Filed
Mar 17 2008
Issued
Aug 17 2010
Expiry
Aug 17 2024
Inventors
Williams, …
Assg.orig
Michael D.…
Assg.curr
Michael D.…
Entity
unknown
Referenced by
3
References
5
Maint.:
n/a
The ornamental design for math teaching aid, as shown and described.

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.
INVENTORS:

Williams, Michael Dean

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D639339, Nov 13 2009 Multiplication tables educational aid set
D654953, Nov 13 2009 Multiplication tables educational aid set
D757175, Feb 29 2012 SPOTS EDUCATIONAL RESOURCES Educational set of cards for addition and subtraction
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
1490858,
7416094, Jul 01 2003 Leonard R., Sokola, Sr. Dinnerware with attached figure and diet reminder
105842,
D443176, Apr 12 1999 Top surface of a nutrition plate
48052,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 17 2008Michael D., Williams(assignment on the face of the patent)
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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