Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Multi-stage roots vacuum pump with sealing module

Multi-stage roots vacuum pump with sealing module

US Patent 4990069 · Granted Feb 5, 1991

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Vacuum pump damping adapter2010
Multistage vacuum pump and a pumping installation including such a pump2010
Pumping installation for pumping out an enclosure containing gases which are mix1994
Butterfly valve for limiting sudden variations in gas flow along a duct1992
Multistage roots pump and a method of assembling such a pump1991
Multistage roots pump and a method of assembling such a pump1991
Multistage roots pump and a method of assembling such a pump1991