Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5558494 | Flow control apparatus and method | John E. Chambers | 1996-09-24 |
| 5393327 | Cartridge filter and method | John E. Chambers | 1995-02-28 |
| D352990 | Combined funnel for a used oil filter and container for gathering residual oil | Duane Sparks, Alan Violet | 1994-11-29 |