Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Load children
F04
POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
Load children
F04D
NON-POSITIVE-DISPLACEMENT PUMPS
Load children
25/00
Pumping installations or systems
Load children Filter patents View analytics View as hierarchy
F04D25/02
Units comprising pumps and their driving means
Load children Filter patents View analytics View as hierarchy
F04D25/08
the working fluid being air, e.g. for ventilation
Load children Filter patents View analytics View as hierarchy