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The ornamental design for a blackboard eraser and dust collecter, as shown and described.
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FIG. 1 is a front view of a blackboard eraser and dust collecter showing my new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a perspective view thereof.
Patent | Priority | Assignee | Title |
Patent | Priority | Assignee | Title |
3986224, | May 16 1975 | Eraser with dust-collecting means | |
4204298, | Nov 18 1977 | Compact vacuum cleaner | |
4462134, | Dec 20 1982 | Blackboard eraser | |
4742594, | Sep 05 1986 | Blackboard eraser | |
4941225, | Nov 13 1989 | Automatic chalk-powder collecting device for blackboard eraser | |
6772472, | Apr 09 2002 | Eraser having selectively openable and closable aperatures | |
D366670, | Mar 14 1994 | Blackboard eraser |
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