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The ornametnal design for a staircase, as shown and described. |
FIG. 1 is a perspective view of a staircase incorporating my design and arranged back-to-back;
FIG. 2 is a perspective view of the staircase;
FIG. 3 is a side elevation view thereof, the opposite side being identical thereto;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a rear elevation view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
Broken lines in the drawings are for illustrative purposes only and are not part of the claimed design.
Patent | Priority | Assignee | Title |
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D478999, | Jul 15 2002 | APPLE COMPUTER INC | Staircase |
D479338, | Dec 23 2002 | SAPA EXTRUSIONS, INC | Steps |
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1113368, | |||
5369921, | Aug 17 1992 | Portable stairway railing device | |
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jul 17 1997 | Confer Plastics Inc. | (assignment on the face of the patent) | / | |||
Oct 15 1997 | CONFER, RAYMOND C | CONFER PLASTICS INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 008899 | /0129 |
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