Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5480545 | Cross braced vacuum washer | — | 1996-01-02 |
| 5281343 | Vacuum filtration system and method of filtering pulp fibers from pulp slurry using the same | Lewis F. Empie, Rollin E. Brown | 1994-01-25 |
| 4894121 | Pressure pulp washer | Oscar Luthi, Lawrence A. Carlsmith | 1990-01-16 |
| 4808265 | Method of washing pulp in a pressure pulp washer adding two washing liquids | Oscar Luthi, Lawrence A. Carlsmith | 1989-02-28 |
| 4643439 | Seal for relatively rotatable parts | Robert W. Munson | 1987-02-17 |