Cantilever stair assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 22, 2023
Grant Date -
Dec 31, 2020
app pub date -
Mar 4, 2019
filing date -
Mar 2, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cantilever stair assembly for installation in segments or sections includes a stair tread module including a stair tread plate having a tread hole. An embedded stair tread is inserted into and fixed within the tread hole. The stair tread module may include a first inner wall stair tread support and a second inner wall stair tread support for mounting to opposite sides of a vertical support member. Each of the first and second inner wall stair tread supports has a first plate with a plurality of support-member-engagement holes therethrough and a second plate perpendicular to the first plate and having a plurality of stair-tread-plate-engagement holes therethrough. The stair tread plate is secured to at least one of the plurality of stair-tread-plate-engagement holes of each of the first and second inner wall stair tread supports.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2019 Application Filing Year
- E04F Class
- 757 Applications Filed
- 506 Patents Issued To-Date
- 66.85 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- E04F Class
- 0 % this patent is cited more than
- 2 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Feb 22, 2027 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 22, 2031 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 22, 2035 |
