Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D355241 | Water filter | Russell Zylstra, Peter Chermak, Robert A. Clack, Dan Klein, Melvin R. Hemp +2 more | 1995-02-07 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D355241 | Water filter | Russell Zylstra, Peter Chermak, Robert A. Clack, Dan Klein, Melvin R. Hemp +2 more | 1995-02-07 |