Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8114285 | Tri-flow filter element with venting | Russell D. Jensen | 2012-02-14 |
| 8034240 | Coalescing element | Walter H. Stone | 2011-10-11 |
| 6484898 | Collapsible container with reduced deflection | Mark Hillis, Clifford R. Perry | 2002-11-26 |
| 6283319 | Collapsible container with reduced deflection | Mark Hillis, Clifford R. Perry | 2001-09-04 |
| 5474197 | Collapsible container with reduced deflection | Mark Hillis, Clifford R. Perry | 1995-12-12 |
| 5199592 | Container with latchable hinged sidewall gate | Mark Hillis | 1993-04-06 |
| 4967927 | Container with latchable hinged sidewall gate | Mark Hillis | 1990-11-06 |
| 4775068 | Collapsible container with removable access panel | Mark Hillis, John A. Malmanger | 1988-10-04 |