Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869844 | High solids liquid alkaline cleaners | — | 1989-09-26 |
| 4824586 | Metal working lubricant | Nelson W. Smith | 1989-04-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869844 | High solids liquid alkaline cleaners | — | 1989-09-26 |
| 4824586 | Metal working lubricant | Nelson W. Smith | 1989-04-25 |