Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824307 | Apparatus for vertically stacking battery plates | David A. Johnson | 1989-04-25 |
| 4822234 | Plate feed apparatus | David A. Johnson, George W. Kahl | 1989-04-18 |
| 4813440 | Apparatus for degreasing a continuous sheet of thin material | James Young | 1989-03-21 |
| 4804420 | Method for degreasing a continuous sheet of thin material | James Young | 1989-02-14 |