Issued Patents All Time
Showing 26–50 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4966702 | Multiple-disc type filters | — | 1990-10-30 |
| 4935126 | Filtering apparatus | — | 1990-06-19 |
| 4935136 | Disk filter | — | 1990-06-19 |
| 4923601 | Filter system having multiple filter elements and backflushing assemblies | — | 1990-05-08 |
| 4906373 | Multiple filter elements with movable flushing assembly | — | 1990-03-06 |
| 4906357 | Filter system having multiple filter elements and back flushing assemblies | — | 1990-03-06 |
| 4880537 | Multiple disc type filter and disc construction useful therein | — | 1989-11-14 |
| 4871457 | Disk filter | — | 1989-10-03 |
| 4863598 | Multiple disc type filters | — | 1989-09-05 |
| 4844806 | Multiple-disc-filters | — | 1989-07-04 |
| 4762615 | Semi-automatic fluid filter | — | 1988-08-09 |
| 4753731 | Multiple-disc type filters | — | 1988-06-28 |
| 4751000 | Multiple-disc type filters | — | 1988-06-14 |
| 4744901 | Multiple disc type filter and disc construction useful therein | — | 1988-05-17 |
| 4736671 | Fluid pressure control device | — | 1988-04-12 |
| 4707258 | Disk filter | — | 1987-11-17 |
| RE32537 | Self-cleanable filter | — | 1987-11-03 |
| 4683060 | Multiple-disc type filters | — | 1987-07-28 |
| 4681681 | Grooved filter discs | — | 1987-07-21 |
| 4654143 | Multiple-disc type filter with extensible support | — | 1987-03-31 |
| 4642182 | Multiple-disc type filter with extensible support | — | 1987-02-10 |
| 4624785 | Easily-cleanable filters | — | 1986-11-25 |
| 4614581 | Backwashable filter | — | 1986-09-30 |
| 4572784 | Multiple-disc filters | — | 1986-02-25 |
| 4473525 | Method of making fluid distribution devices particularly useful for drip irrigation | — | 1984-09-25 |