He has another one where it seems it pumps water through a second reservoir. Looks like that expired recently so possibly why we are seeing this? (Far from a pa

He has another one where it seems it pumps water through a second reservoir. Looks like that expired recently so possibly why we are seeing this? (Far from a patent expert) https://patents.google.com/patent/EP0707670B1/en?q=D06F37%2f265&assignee=Georges+Martinez https://patents.google.com/patent/EP0707670B1/en?q=D06F37%2f...