Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816169 | Vacuum filter system and vacuum filter discharge flow assembly | — | 1989-03-28 |
| 4795558 | Shower pipes for rotary drum filter | — | 1989-01-03 |
| 4795572 | Replaceable trunnion seal | — | 1989-01-03 |
| 4697292 | Shower pipes for rotary drum filter | — | 1987-10-06 |
| 4683059 | Vacuum breaker valve-discharge elbow assembly for rotary drum filters | — | 1987-07-28 |
| 4680115 | Filtrate discharge accelerator system for center valve filter drums | — | 1987-07-14 |
| 4670099 | Method and apparatus for washing a mat of pulp stock on a drum filter | — | 1987-06-02 |
| 4632739 | Electrolytic cell head with replaceable insert and method of protecting the same | — | 1986-12-30 |
| 4608171 | Adjustable mounting for valve-discharge elbow of rotary drum filters | — | 1986-08-26 |
| 4608170 | Angularly adjustable breaker valve-discharge elbow for rotary drum filters | — | 1986-08-26 |
| 4540457 | Butterfly valve with pressurized O-ring sale | — | 1985-09-10 |
| 4522716 | Shower pipes for rotary drum filter | — | 1985-06-11 |
| 4419165 | Method of making a rotary drum filter and method of making an annular valve housing for such a drum filter | — | 1983-12-06 |
| 4383877 | Method of making an annular valve housing for a rotary drum filter | — | 1983-05-17 |
| 4370231 | Rotary drum filter | — | 1983-01-25 |
| 4248716 | Trunnion and trunnion packing sleeve insert for rotary drum filter | — | 1981-02-03 |