Multi-purpose ladder with improved rungs
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 6, 2017
Grant Date -
Aug 4, 2016
app pub date -
Apr 8, 2016
filing date -
May 15, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A multi-purpose ladder with improved rungs has two ladder sections, and each of the ladder sections comprises two inner rails attached with inner rungs and two outer rails attached with outer rungs. Each of the inner rungs is composed of an upper rung member, a square pipe shaped intermediate rung member, and a lower rung member. The upper rung member and the lower rung member each have a slant pedal section and two support sections. The two support sections join the upper and lower side of the intermediate rung member and the slant pedal section. The slant pedal section inclines an angle corresponding to the outer rungs such that the inner rungs provide strong strength for being stepped on.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2016 Application Filing Year
- E06C Class
- 114 Applications Filed
- 93 Patents Issued To-Date
- 81.58 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- E06C Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 6, 2024 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 6, 2028 |
