|
The ornamental design for the mathematic teaching rack, as shown and described. |
|||||||||||||||||
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.
| Patent | Priority | Assignee | Title |
| 8021159, | Mar 18 2008 | STRING MATH, LLC | String math manipulative system and method |
| 8851894, | Mar 18 2008 | Double-sided, front-to-back-aligned, tactile learning aid |
| Patent | Priority | Assignee | Title |
| 3455034, | |||
| 3811205, | |||
| 3995378, | Jul 12 1974 | Mathematics visual teaching aid | |
| 4233757, | Sep 05 1978 | Mathematics device | |
| 4812124, | Feb 19 1988 | CLOPPER, LAWRENCE A III, 39-70 46TH STREET-SUNNYSIDE, NY | Hexadecimal abacus |
| 4884973, | Jan 18 1989 | Mathematic teaching aid | |
| 5205747, | May 13 1992 | Bead calculator educational toy | |
| 149083, | |||
| 169562, | |||
| 184042, | |||
| D300040, | Feb 18 1986 | Keyboard guide |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Date | Maintenance Fee Events |
| Date | Maintenance Schedule |