Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816097 | Method of manufacturing a non-metallic core having a perforated septum embedded therein | Robert A. Coleman | 1989-03-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816097 | Method of manufacturing a non-metallic core having a perforated septum embedded therein | Robert A. Coleman | 1989-03-28 |