Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6651823 | Plastic filter housing formed from multiple sections and having a skewed weld seam, and filter incorporating same | Timothy L. Memmer | 2003-11-25 |
| 6505597 | Cleansing oil filter containing quick-release liquid antioxidant/additive solution, and method of using same to convert an engine from petroleum-based oil to botanically-based oil | Gary B. Zulauf, Ronald P. Rohrbach | 2003-01-14 |