Patent
   D505157
Priority
May 25 2004
Filed
May 25 2004
Issued
May 17 2005
Expiry
May 17 2019
Assg.orig
Entity
unknown
0
7
n/a
The ornamental design for a blackboard eraser and dust collecter, as shown and described.

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.

Fan, Chen-Lang

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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