Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH
Patent Applications and Registrations
Patent applications and USPTO patent grants for Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH.The latest application filed is for "pumps".
- Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH - N/A
- Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH - Asslar DE
- Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH - Assler DE
- Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH - Asslahr DE
| Patent | Date |
|---|---|
| Pumps Grant 4,832,564 - Holss , et al. May 23, 1 | 1989-05-23 |
| Pump with magnetic bearings Grant 4,541,772 - Becker September 17, 1 | 1985-09-17 |
| Electric motor drive arrangement Grant 4,520,296 - Lepper , et al. May 28, 1 | 1985-05-28 |
| Rotary piston pump with pressure equalization chambers for the shaft split seals Grant 4,465,442 - Lang , et al. August 14, 1 | 1984-08-14 |
| Apparatus for heating and drying articles Grant 4,424,633 - Bernhardt , et al. January 10, 1 | 1984-01-10 |
| Method of and apparatus for measuring the rate of leak Grant 4,320,653 - Bernhardt March 23, 1 | 1982-03-23 |
| Turbomolecular pump with magnetic mounting Grant 4,111,595 - Becker , et al. September 5, 1 | 1978-09-05 |
| Bearing arrangement Grant 4,082,376 - Wehde , et al. April 4, 1 | 1978-04-04 |
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