Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850814 | Hydraulic gear pump | Dieter Otto | 1989-07-25 |
| 4813853 | Internal gear pump | Dieter Otto | 1989-03-21 |
| 4780070 | Gear pump having multiple outputs | — | 1988-10-25 |
| 4772185 | Rotary vane pump having a plurality of inlet and outlet slots in a rotating sleeve | — | 1988-09-20 |
| 4770617 | Gear pump with leakage fluid intermittently communicated to expanding fluid cells | — | 1988-09-13 |
| 4750867 | Regulating pump | Dieter Otto | 1988-06-14 |
| 4737087 | Drive shaft seal for gear pump and method | — | 1988-04-12 |
| 4674964 | Gear pump having multiple outputs | — | 1987-06-23 |
| 4648810 | Control apparatus for a positive displacement reciprocating pump | Heinz Schippers | 1987-03-10 |
| 4604041 | Rotary vane pump | Robert F. Lange | 1986-08-05 |
| 4523901 | Control apparatus for a positive displacement reciprocating pump | Heinz Schippers, Otwin Eich | 1985-06-18 |
| 4515512 | Seal for high pressure pump or the like | Artur Hager | 1985-05-07 |
| 4478562 | Oil lubrication of vacuum pump with pulsating oil feed | Heinz Schippers | 1984-10-23 |
| 4462302 | Motor fuel feed pump | — | 1984-07-31 |
| 4459091 | Rotary vane pump | — | 1984-07-10 |
| 4355655 | Hydraulic control apparatus for load independent flow regulation | Claus Kirchherr, Horst Kahl, Siegfried Hoffmann | 1982-10-26 |
| 4303091 | Hydraulic control apparatus for load independent flow regulation | Claus Kirchherr, Horst Kahl | 1981-12-01 |
| 4255098 | Rotary vane pump assembly | — | 1981-03-10 |
| 4231728 | Rotary vane pump | — | 1980-11-04 |