Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5858435 | Method of cleaning and preparing a quantity of produce for sale | — | 1999-01-12 |
| 5241720 | Laundry waste water treatment and wash process | Richard Engel, Donald H. Bladen, Keith R. Schneider | 1993-09-07 |
| 5181399 | Laundry waste water treatment and wash apparatus | Richard Engel, Donald H. Bladen, Virginia F. Engel | 1993-01-26 |
| 5097556 | Laundry waste water treatment and wash process | Richard Engel, Donald H. Bladen, Virginia F. Engel | 1992-03-24 |