Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10123462 | Ducted exhaust equipment enclosure | William Krietzman, Richard Evans Lewis, II | 2018-11-06 |
| 9974198 | Vertical exhaust duct for electronic equipment enclosure | Richard Evans Lewis, II | 2018-05-15 |