Arithmetic instuctional apparatus

The ornamental design for an arithmetic instructional apparatus, as shown and described.

FIG. 1 is a plan view of an arithmetic instructional device showing my new design;

FIG. 2 is a side view of the arithmetic instructional device of FIG. 1; and,

FIG. 3 is a bottom view of the arithmetic instructional device of FIG. 1.

The FIG. 1 view has been shaded to indicate color.

Patent	Priority	Assignee	Title
D533904,	Aug 16 2005	Magy Quint AS	Chord wheel
D535333,	Aug 16 2005	Magiqiat AS	Chord wheel
D599405,	Feb 22 2006		Rainbow wheel teaching aid
D639339,	Nov 13 2009		Multiplication tables educational aid set
D651649,	Mar 08 2011		Phonics education apparatus
D654953,	Nov 13 2009		Multiplication tables educational aid set

Patent	Priority	Assignee	Title
1662503,
199721,
2567497,
284576,
2908439,
3419973,
3624928,
4372742,	Oct 21 1981		Arithmetical teaching aid
4399353,	Jul 23 1981		Color computer wheel
4424039,	Sep 29 1982		Mathematics teaching device
4445865,	Jan 14 1983	A DAIGGER & COMPANY, INC	Method of teaching mathematics
4790752,	Jan 30 1987	LEE, MANG-SHIANG; Solid State Opto Limited	Illuminated dental impression tray
5018976,	Jan 11 1990		Teaching system for enhancing the learning of sets of facts
666070,
962441,
D354314,	Jan 19 1993		Dart bowling game

Executed on

Assignor

Assignee

Conveyance

Frame

Reel

Doc

n/a

Date	Maintenance Fee Events

n/a

Date	Maintenance Schedule