Inventor

MUEHLHOFF MARTIN

DE4 patents

Patents

4 patents

US5553998ASep 10, 1996

Gas friction vacuum pump having at least three differently configured pump stages releasably connected together

LEYBOLD AG47 citations90

US5165872ANov 24, 1992

Gas friction pump having a bell-shaped rotor

LEYBOLD AG24 citations90

US5051060ASep 24, 1991

Gas friction pump having an outlet-side helical stage

LEYBOLD AG32 citations90

US5114320AMay 19, 1992

Blower or pump with capillary filter for replenishment of oil separated by vacuum pump

LEYBOLD AG8 citations67