|
DE947190C
|
|
Centrifugal blower or centrifugal pump for simultaneous, separate delivery of several gases or liquids
|
|
GB682920A
|
|
Improvements in or relating to the aerating of stored agricultural products
|
|
GB529901A
|
|
Improvements in and relating to drying shafts for granular loose material
|
|
US2245664A
|
|
Drying shaft for granular loose material
|
|
GB493993A
|
|
Improvements in and relating to ventilating or drying devices suitable for treating crops
|
|
US2196391A
|
|
Ventilating plant for goods piled up such as grain
|
|
DE639012C
|
|
Device for the artificial production of dew on plants grown in greenhouses
|
