Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852333 | Method for making a ground coffee discoid pad | — | 1989-08-01 |
| 4807762 | Procedure for sorting a granular material and a machine for executing the procedure | William S. Maughan | 1989-02-28 |