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Patent
D621959
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Priority
Aug 14 2006
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Filed
Feb 23 2010
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Issued
Aug 17 2010
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Expiry
Aug 17 2024
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Assg.orig
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Entity
unknown
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6
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8
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n/a
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The ornamental design for a portable stair platform, as shown and described.
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FIG. 1 is a perspective view of a portable stair platform showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
Klockler, Alan
Patent |
Priority |
Assignee |
Title |
1057722, |
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352716, |
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4237661, |
Jun 21 1978 |
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Support stand for use with an above ground pool |
4753320, |
Apr 22 1987 |
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Convertable step stool |
5715910, |
Jul 20 1995 |
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Stairway platform |
5870788, |
Jun 25 1997 |
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Portable ramp device |
7162760, |
Jun 19 2003 |
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Methods and apparatus for a step mounting system |
D306487, |
Mar 21 1988 |
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Tree stand |
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