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Patent
   D262892
Priority
Jul 02 1979
Filed
Jul 02 1979
Issued
Feb 02 1982
Expiry
Feb 02 1996
Inventors
Heiko, Bur…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
8
References
3
Maint.:
n/a
The ornamental design for an educational aid called mathematical aid, as shown.

FIG. 1 is an isometric view of the mathematical aid showing my new design;

FIG. 2 is an enlarged front elevational view thereof;

FIG. 3 is an enlarged side elevational view thereof;

FIG. 4 is an enlarged top plan view thereof;

FIG. 5 is an enlarged bottom plan view thereof.
INVENTORS:

Heiko, Burton S.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D294714, Aug 05 1985 Question and answer cube
D307605, May 26 1987 Janey Products, Inc. Parking lot location indicator
D324878, Jul 12 1989 Color selection chart
D341378, May 21 1992 GENCOR, INC Parking lot location indicator
D374403, Jun 05 1995 Mafor decoder navigational ruler
D530751, Jan 11 2005 Dial tag
D532827, Jan 11 2005 Dial tag
D550286, Jan 11 2005 Dial tag
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
2471271,
667397,
150506,
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