Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D659263 | Building unit | William Charles Leonhardt | 2012-05-08 |
| D633630 | Building unit | William Charles Leonhardt | 2011-03-01 |
| D615216 | Building unit | William Charles Leonhardt | 2010-05-04 |