Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797302 | Electric lamp having a mirror-coated lamp vessel | Johannes W. Ingeveld | 1989-01-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797302 | Electric lamp having a mirror-coated lamp vessel | Johannes W. Ingeveld | 1989-01-10 |