Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6365040 | Equipment for the retardation of an inflow in circular sedimentation tanks | — | 2002-04-02 |
| 5171436 | Apparatus for the conveyance of screening | — | 1992-12-15 |
| 4921599 | Double-rack grating for use in wastewater | — | 1990-05-01 |
| 4902410 | Interceptor for the continuous removal of solid matter from a mixture of solids and liquid | — | 1990-02-20 |
| 4779719 | Lifting device with a higher speed in the downward movement area than in the upward movement area | Werner Marzluf | 1988-10-25 |
| 4184957 | Screening apparatus for removing coarse material from fluids including a screen cleaner | — | 1980-01-22 |