FIG. 1 is a perspective view of a spiral stairway showing my new design;
FIG. 2 is a top plan view thereof; and
FIG. 3 is a bottom plan view thereof.
Suckno, Abraham
| Patent |
Priority |
Assignee |
Title |
| 5737884, |
Sep 17 1996 |
|
Spiral stair case |
| D282103, |
Apr 04 1983 |
|
Spiral staircase |
| D398063, |
Oct 22 1997 |
|
Step unit for a modular spiral staircase |
| D715963, |
Oct 19 2012 |
Apple Inc |
Staircase |
| Patent |
Priority |
Assignee |
Title |
| 3513547, |
|
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