Step stool
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 1, 2014
Grant Date -
Sep 1, 2011
app pub date -
Nov 5, 2009
filing date -
Nov 6, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
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Abstract
A step tool has front and rear leg tubes, a bottom and top footplate, a connection device for connecting the footplate and the leg tubes, a lock catch device of the top footplate. The front leg tubes are joined to the rear leg tubes rotatablely. The foreside of the top footplate joins to the front leg tubes rotatablely. A rail is fixed on the rear leg tubes. The lock catch is disposed on the top footplate and is detachly connected to the rail. The lock catch device includes two connecting ears, a rotation axis, a lock catch and a torsion spring.
First Claim
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Family
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International Classification(s)
- 2009 Application Filing Year
- E06C Class
- 57 Applications Filed
- 38 Patents Issued To-Date
- 66.67 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 13 Citation Count
- E06C Class
- 92.98 % this patent is cited more than
- 11 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 1, 2025 |
