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Patent
D673299
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Priority
May 04 2011
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Filed
May 04 2011
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Issued
Dec 25 2012
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Expiry
Dec 25 2026
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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 half-step staircase structure, as shown and described.
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FIG. 1 is a three quarter front, top, left perspective view of a half-step staircase structure showing my new design.
FIG. 2 is a front elevational view thereof, taken in the direction of arrow 2 in FIG. 6;
FIG. 3 is a left side view thereof taken in the direction of arrow 3 in FIG. 6;
FIG. 4 is a right side view taken in the direction of arrow 4 in FIG. 6;
FIG. 5 is a top view taken in the direction of arrow 5 in FIG. 6; and,
FIG. 6 is a view identical to FIG. 1 with directional arrows included.
It is to be understood that bracket in all figure indicates that the precise staircase structure is not claimed.
Balducki, John R.
Patent |
Priority |
Assignee |
Title |
2044260, |
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2206862, |
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5355904, |
Oct 04 1993 |
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Stair climbing aid |
7686138, |
Apr 19 2007 |
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Free standing step with user customizable height and flat expanding deck |
20030024177, |
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D287283, |
Sep 21 1983 |
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Portable half-step stairway unit |
D481467, |
Feb 10 2003 |
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Transparent staircase |
D566298, |
Feb 16 2007 |
MOD-U-CON LLC |
Stackable precast concrete stairwell unit |
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