Side rail for trenchduct
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 2, 1991
Grant Date -
N/A
app pub date -
Oct 13, 1989
filing date -
Oct 13, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Side rail structure for trenchduct side rail has a lower section and an upper section. The lower section is thin, galvanized sheet steel and the upper section is an aluminum extrusion clamps connect the upper and lower sections so that in a full bottom trench the whole trench can be adjusted. In both full bottom and bottomless trench, the upper section can be adjusted with respect to lower section. In the full bottomless trench a friction fit holds upper and lower sections together.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully