|
2020
|
P/S
|
Portable electric fans, namely, evaporative cooling fans |
|
2019
|
Invention
|
Quick release curtain closure system. A closure apparatus for covering a portal is disclosed here... |
|
2017
|
Invention
|
Roll-up dual curtain closure system. A dual curtain closure system for covering a portal wherein ... |
|
2006
|
Invention
|
Combination material level monitor. A material level detection sensor (10) having a continuous ul... |
|
2005
|
Invention
|
Vertical door fan shutter.
A fan shutter having one end attachable to an exhaust fan and the opp... |
|
|
Invention
|
Vertical door fan shutter. A fan shutter having one end attachable to an exhaust fan and the oppo... |
|
1996
|
P/S
|
door, window and ventilation closures in the nature of shades |
