Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888214 | Aparatus and method for coating fasteners | Richard J. Duffy, Anthony DiMaio | 1989-12-19 |
| 4865881 | Apparatus and process for making locking slide nuts | Richard J. Duffy | 1989-09-12 |
| 4842890 | Method for coating fasteners | Richard J. Duffy | 1989-06-27 |
| 4815414 | Powder spray apparatus | Richard J. Duffy | 1989-03-28 |