Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795392 | Method for sealing vacuum tube tips especially cathode tube tips, and machine for applying this method | Clemente Ferragni | 1989-01-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795392 | Method for sealing vacuum tube tips especially cathode tube tips, and machine for applying this method | Clemente Ferragni | 1989-01-03 |