Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821143 | Switchgear enclosure with improved supporting frame and improved access door | Nils V. Holmgren, Donald R. Martin | 1989-04-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821143 | Switchgear enclosure with improved supporting frame and improved access door | Nils V. Holmgren, Donald R. Martin | 1989-04-11 |