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Mathematics teaching aid |
| D297437 |
Mathematics teaching aid
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| Patent Drawings: | |
| Inventor: |
Mortensen |
| Date Issued: |
August 30, 1988 |
| Application: |
06/763,671 |
| Filed: |
August 8, 1985 |
| Inventors: |
Mortensen; Vernon J. (Coeur d'Alene, ID)
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| Assignee: |
Mortensen Educational Products, Inc. (Hayden Lake, ID) |
| Primary Examiner: |
Zarfas; Louis S. |
| Assistant Examiner: |
Shooman; Theodore M. |
| Attorney Or Agent: |
Wells, St. John & Roberts |
| U.S. Class: |
D19/59; D19/60 |
| Field Of Search: |
D19/59; D19/60; D19/61; D19/62; D19/64; D19/99; 434/195; 434/210; 434/202 |
| International Class: |
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| U.S Patent Documents: |
D158481; 1471437; 3908287 |
| Foreign Patent Documents: |
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| Other References: |
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| Abstract: |
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| Claim: |
The ornamental design for mathematics teaching aid, as shown and described. |
| Description: |
FIG. 1 is a top, front and left side perspective view of a mathematics teaching aid showing my new design;
FIG. 2 is an enlarged fragmentary front elevational view thereof, shown with the transparent cover removed and illustrating the indicia which is omitted from FIGS. 1, 3 and 5 for ease of illustration;
FIG. 3 is a top, front and left side perspective view thereof, shown with the cover pivoted rearwardly;
FIG. 4 is a left side elevational view thereof, the right side being a mirror image;
FIG. 5 is a front elevational view thereof;
FIG. 6 is a rear elevational view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a reduced scale bottom plan view thereof;
FIG. 9 is a reduced scale left side elevational view thereof, shown with the cover pivoted rearwardly;
FIG. 10 is a reduced scale left side elevational view thereof, shown with the cover removed;
FIG. 11 is a front elevational view thereof, shown with the cover and bars removed for clarity of illustration;
FIG. 12 is a rear elevational view thereof, shown with the cover and bars removed for clarity of illustration; and
FIG. 13 is a top plan view thereof, shown with the cover and bars removed for clarity of illustration.
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