|
2017
|
Invention
|
Low sound tubeaxial fan. A tubeaxial fan housing has a planar support vane that is fixed at sides... |
|
2016
|
Invention
|
Airfoil damper. A fan damper includes a frame and a plurality of hollow airfoil blades, each havi... |
|
1999
|
P/S
|
EVAPORATIVE COOLING PADS FOR FAN AND PAD AGRICULTURAL AND HORTICULTURAL COOLING SYSTEMS |
|
1990
|
Invention
|
Fan blade assembly |
|
1975
|
Invention
|
Heat transfer system particularly applicable to solar heating installations. The present inventio... |
|
1973
|
P/S
|
VENTILATING SYSTEMS FOR USE IN THE INDUSTRIAL, HORTICULTURAL AND AGRICULTURAL FIELDS COMPRISING S... |
