Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5282877 | Filtration device | Phillip E. Unger, Petrus Jacobus Adrianus Tijm | 1994-02-01 |
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Hendrik A. Dirkse
Overall (1994): #127,708 of 165,921Top 80%
1
Patents 1994