Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4331901 | Electric incandescent lamp | Leonard C. H. Eijkelenboom, Jan de Ridder | 1982-05-25 |
| 4319157 | High pressure mercury vapor discharge lamp | — | 1982-03-09 |
BV
Bertus de Vrijer
Overall (1982): #15,972 of 81,411Top 20%
2
Patents 1982