Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5738365 | Collapsible cart | — | 1998-04-14 |
| 5205340 | Insulated paper sleeve for casting metal articles in sand molds | Robert G. Brown | 1993-04-27 |
| 4981166 | Foundry paper riser and system therefor | Robert G. Brown | 1991-01-01 |