Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858538 | Partial combustion burner | Hendrikus J. A. Hasenack | 1989-08-22 |
WK
Willem F. Kuypers
Overall (1989): #43,843 of 140,708Top 35%
1
Patents 1989