Bent pole composite stairs
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Feb 14, 2012
Grant Date -
May 6, 2010
app pub date -
Nov 4, 2008
filing date -
Nov 4, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A staircase including a bent pole stringer with first and second straight stair sections separated by a spiral stair section. There is preferably a first bend defined on the stringer between the first straight stair section and the spiral stair section, and a second bend defined on the stringer between the spiral stair section and the second straight stair section. There are also a plurality of first straight stair treads cantilevered from the first straight stair section of the stringer, a plurality of spiral stair treads cantilevered from the spiral stair section of the stringer, and a plurality of second straight stair treads cantilevered from the second straight stair section of the stringer.
First Claim
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