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Patent
   D273231
Priority
Sep 08 1981
Filed
Sep 08 1981
Issued
Mar 27 1984
Expiry
Mar 27 1998
Inventors
Suckno, Ab…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
4
References
1
Maint.:
n/a
The ornamental design for a spiral stairway, substantially as shown.

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.
INVENTORS:

Suckno, Abraham

THIS PATENT IS REFERENCED BY THESE PATENTS:
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
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3513547,
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