DIFF Subgroup
F04C 28/065 Full Title
Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids > specially adapted for stopping, starting, idling or no-load operation
F04C 28/065 Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids > specially adapted for stopping, starting, idling or no-load operation