Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6020030 | Coating an aluminum alloy substrate | Joseph D. Guthrie | 2000-02-01 |
| 5622569 | Aluminum rigid container sheet cleaner and cleaning method | Joseph D. Guthrie, George T. Gregory | 1997-04-22 |