Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859226 | Universal lower stem mold for manufacturing a molded glass stem | — | 1989-08-22 |
| 4824459 | Marker pin for a universal stem mold | — | 1989-04-25 |
| 4813991 | Universal stem mold for manufacturing a molded glass stem | — | 1989-03-21 |
| 4813992 | Universal stem mold apparatus | — | 1989-03-21 |