Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304340 | Machine for dehydrating photographic chemicals | James A. DeLeeuw | 1989-10-31 |
| 4828717 | Device and method for reducing volume of aqueous waste effluents | James A. DeLeeuw | 1989-05-09 |