| 5399817 |
Muffler |
Lothar Brenner, Hartmut Kriehn, Sascha Bauer |
1995-03-21 |
| 5338167 |
Dry-running vacuum pump |
— |
1994-08-16 |
| 5108271 |
Multiple connection for rotation vacuum pumps |
Wolfgang Leier |
1992-04-28 |
| 5066202 |
Method and apparatus for delivering oil to a multi-stage pump |
Berthold Fischer, Peter Mueller, Dieter Vorberg |
1991-11-19 |
| 5049050 |
Method for operating a twin shaft vacuum pump according to the Northey principle and a twin shaft vacuum pump suitable for the implementation of the method |
Wolfgang Leier |
1991-09-17 |
| 5046934 |
Twin shaft vacuum pump with purge gas inlet |
— |
1991-09-10 |
| 5035585 |
Multiple connector for rotation vacuum pumps |
Wolfgang Leier |
1991-07-30 |
| 4983107 |
Multistage rotary piston vacuum pump having sleeves to fix shaft positions |
Ralf Steffens, Hans-Peter Kabelitz, Wolfgang Leier |
1991-01-08 |
| 4943215 |
Multistage vacuum pump with bore for fouling removal |
— |
1990-07-24 |
| 4940398 |
Twin-shaft, multiple-stage vacuum pump with the shafts vertically disposed |
Hartmut Kriehn, Wolfgang Leier, Ralf Steffens |
1990-07-10 |
| 4886599 |
Filter cartridge with series elements for chemical and mechanical filtration |
Paul Bachmann, Wolfgang Leier |
1989-12-12 |
| 4756825 |
Apparatus for purifying hydrogen-free fluorinated lubricants |
Paul Bachmann, Dieter Gotz |
1988-07-12 |
| 4612957 |
Vacuum pump and trap combination |
Lutz Arndt, Paul Bachmann, Wolfgang Leier, Dieter Vorberg |
1986-09-23 |
| 4588504 |
Oil circuit coupler for an oil-sealed vacuum pump |
Wolfgang Leier |
1986-05-13 |
| 4561837 |
Method of producing a rotor for rotary slide-vane vacuum pumps, and a rotor produced by said method |
Hans-Peter Kabelitz |
1985-12-31 |
| 4525129 |
Oil-sealed vacuum pump |
Peter Frieden, Wolfgang Leier |
1985-06-25 |
| 4483667 |
Vacuum pump and method of operating the same |
Peter Frieden, Hans-Peter Kabelitz |
1984-11-20 |