Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864191 | Rhenium-containing electrode for a high-pressure sodium discharge lamp | Joseph Franciscus Raymond Eijsermans | 1989-09-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864191 | Rhenium-containing electrode for a high-pressure sodium discharge lamp | Joseph Franciscus Raymond Eijsermans | 1989-09-05 |