Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805180 | Discharge tube apparatus | Arthur Maitland, Hugh Menown | 1989-02-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805180 | Discharge tube apparatus | Arthur Maitland, Hugh Menown | 1989-02-14 |